consumers, in deciding among items, choose those items with the highest marginal utility per dollar.

1、

traumatic spur of nasal septum

外伤性鼻中隔骨刺

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2、

design and application of regular packing of cuprammonia scrubber tower

规整填料铜洗塔的设计及其应用

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3、

time and tide wait for no one, a promising youth is supposed to try something new

时不我待，有希望的青年应该尝试新东西。

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4、

we want to buy quick couplings, check valves, rotary union and swivel elbows coupling and pulley.

我们要采购快速接头，止回阀，旋转弯头耦合和滑轮。

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5、

special considerations for removing a tailwater surge chamber from the waterway system in a pumped-storage plant

抽水蓄能电站输水系统取消尾水调压室研究

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6、

thus, from the earth, we can only see one side, by definition the near side, of the moon.

因此，在地球上的人类永远只能看到月球近地的一面。

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7、

the changes of thyroid hormones in the patients with serious serous effusion

重症浆膜腔积液患者甲状腺激素变化

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8、

the value of immunocytochemistry in the cytological diagnosis of serous effusion

免疫细胞化学与浆膜腔积液细胞学诊断

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9、

cytopathological differential diagnosis between reactive mesothelial cells and metastatic adenocarcinoma in serous effusion

浆膜腔积液中转移性腺癌与间皮细胞的病理学研究

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10、

ultrastructural study of diagnostic cytology of serous effusion

浆膜腔积液诊断细胞学超微结构研究及临床应用价值

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11、

advance in research on maternal-effect genes

母性效应基因的研究进展

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12、

maternal effect on sensitivity of embryo to aba and grain dormancy in wheat

母体对小麦胚的ABA敏感性和种子休眠性的影响

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13、

cat activity and aba content in ssc had significant maternal effect.

CAT活性、叶绿素含量存在明显的母体效应；

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14、

there were no maternal effect, and additive effects predominated for the all fiber properties.

遗传主效中，所有的研究性状不存在母体效应，以加性为主；

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15、

what is the ideal age to receive a trust fund?

何时才是获得信托基金的理想年龄？

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16、

today, the task force is set to meet with representatives from groups that support gun rights, like the national rifle association,

今天，工作组将会见支持拥有枪支权利的代表团体，比如全国步枪协会，

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17、

he can hit a national rifle association target at 100 yards, and this week he hit a bowling pin at 200 yards.

他能够在100码的距离击中全美步枪协会（NationalRifleAssociation）标准的标靶，本周还在200码的距离射中了一只保龄球瓶。

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18、

obama and gun control advocates face obstacles because of the power of groups such as the national rifle association.

由于全国步枪协会等团体的强大势力，奥巴马和限枪派面临着阻力。

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19、

but not anyone in congress would support that, and the national rifle association is working to prevent any new restrictions on gun.

但是在国会没有任何人将会支持，而全国步枪协会正在努力阻止任何关于枪支的限制。

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20、

she is a lifelong member of the national rifle association (nra), a lobbying group promoting the rights of gun owners.

她是支持有枪者权利的游说组织美国步枪协会（NationalRifleAssociation）的终身会员。

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