I've worked my butt off on this all day.

1、

I've been working my butt off to work out.

我最近有努力在锻炼呀。

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2、

I work my butt off to make a living.

为了谋生我努力工作。

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3、

The air was cold on my butt and upper legs.

我的屁股和大腿顿时感到一阵恶寒。

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4、

And then I turn around and on my butt it says.

然后我转过身，屁股上有几个大字。

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5、

Let's have no ifs and buts, I'm determined to proceed with the plan.

我们别再找托词了，我决心要将计划进行下去。

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6、

I want no ifs and buts ― just pay the money now.

我不想听任何借口，现在就给钱吧。

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7、

But me no buts.

别老跟我“但是”，“但是”的。

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8、

Mom!-No buts. You choose the toys you want to donate, I'll drop them off at Sunnyside.-

别反对了你选择想捐赠的玩具我把它们送到阳光幼儿园去

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9、

These are my orders, and I want you to but me no buts, just get along and do as I say.

这是我的命令，我不许你说但是，给我立即行动，照我说的去做。

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10、

We're going to visit your aunt tomorrow and there'll be no buts about it.

我们明天将拜访你的阿姨，对这件事没有“但是”可言。

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11、

No buts. hurry, before I'm forced to kill again!

别反对了，快，别让我再杀人！

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12、

Rufus: No buts. I had a great time this summer.

没有但是，我的夏天非常棒。

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13、

Our researches are included as follows: 1. N-( diphenylmethylene) glycine t-butyl ester was synthesized from benzophenone imine and t-butyl chloroacetate using microwave irradiation, and under the optimum conditions chemical yield gets 98%.

我们的研究工作主要包括以下几个方面：1.以二苯甲酮亚胺和α-氯代乙酸叔丁酯为原料，合成了二苯甲酮亚胺甘氨酸叔丁酯，在优化条件下，化学产率高达98%。

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14、

The results showed that the rates of polymerization increased with the increase of the rate of initiation, while the t-butyl hydroperoxide/ VO ( 2+) gave a larger particle size and a narrower particle size distribution.

实验结果表明，聚合速率随着引发速率的增加而增加。在t－BHP／VO~（2＋）体系中，聚合物粒子粒径较大，其分布较窄。

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15、

It can be synthesized with the material of lovastatin, hydroxy protecting agent of trimethylchlorosilane, and t-butyl lithium instead of pyrrole lithium. The total yield is about 78%.

以洛伐他汀为原料，三甲基氯硅烷为羟基保护基，用活泼的强亲核试剂叔丁基锂代替当前的吡咯烷锂合成了目标产物新伐他汀，总收率达78%。

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16、

The polymerization of methyl methacrylate by copper ( I) t-butoxide with n-butyl chloride, n-butyl bromide, t-butyl chloride and t-butyl bromide is studied.

研究了叔丁醇亚铜为催化剂、四种卤代烃（正丁基氯、正丁基溴、叔丁基氯、叔丁基溴）为引发剂的甲基丙烯酸甲酯的聚合反应。

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17、

Chlorinated polybutadiene rubber ( CBR) containing active chlorine was synthesized when t-butyl hypochlorite was employed as chlorinating agent under organic acid circumstance ( formic acid and chloroacetic acid).

以次氯酸叔丁酯为氯化剂，氯乙酸为活性氯原子的引入剂，在甲酸存在下合成了既含有活性氯原子又含有惰性氯原子的氯化顺丁橡胶（CBR）。

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18、

Standard thermodynamic functions of transfer of naphthalene from water to H2O-t-butyl alcohol ( TBA) mixtures were determined from the solubility measurements at different temperatures.

通过溶解度法研究了萘从水到水-叔丁醇（TBA）混合溶剂中的标准迁移热力学性质。

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19、

An analytical method for the esterified product system was firstly established. The thermodynamics of the reactions involved in the synthesis of t-butyl acetate ( TBA).

本研究首先建立了酯化产物体系的分析方法：对乙酸叔丁酯合成过程中所涉及的各个反应进行了热力学分析：结果表明，酸烯酯化反应和副反应相互影响，低温有利于主反应的进行。

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20、

Cefixime open side chain acid was prepared by oximation, etherification, chlorination, ester decomposition using t-butyl acetoacetate as starting material.

以乙酰乙酸叔丁酯为原料，经过肟化、醚化、氯代酯解反应合成了头孢克肟开环侧链酸。

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