The forced training included calf raise for 50 times and sit-ups for 50 times on 45 ° arched board.

Doing hundreds of sit-ups alone won't tone a flabby belly.

首先，单纯地做许多仰卧起坐不会让你松弛的肚腩变结实。

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The Canadian Armed Forces banished the sit-up from its fitness test for the same reason.

加拿大武装部队也因此将仰卧起坐从其体能测试中剔除。

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Edna: Sit-ups. Ladies. Get on you backs.

爱德娜：仰卧起坐，女士们。躺下去。

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Every time you get a junk message, do 10 sit-ups or any other work-out you find most effective.

每次你收到一封垃圾邮件，就做10个仰卧起坐，或者其他你认为最有效的运动项目。

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your capacity to do so will atrophy just like your stomach muscles if you stop doing sit-ups

你的能力就会像你的腹部肌肉一样在停止做仰卧起坐之后会出现萎缩

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Please see VideoJug's "How to do sit-ups" for the perfect technique.

可以看一下本网站“怎样做仰卧起坐”视频节目，了解一下做仰卧起坐的技巧。

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That's how you do a traditional sit-up, an exercise many of us have been doing since elementary school.

这是传统仰卧起坐的姿势，很多人从小学就开始接触这项运动了。

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She said I could do that by doing sit-ups and jumping jacks for two weeks.

她说我要是能把仰卧起坐和开合跳坚持两周她就相信我。

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As a result, many fitness gurus are abandoning sit-ups.

因此许多健身达人不再做仰卧起坐了。

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If you're bored of sit-ups, try this exercise instead.

你厌烦了做仰卧起坐，试试练习。

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We do sit-ups to make our muscles strong.

我们做仰卧起坐来使我们的肌肉强壮。

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In addition to its health disadvantages, the sit-up is also seen as lacking efficiency.

除了不利于健康，仰卧起坐还被视为低效运动。

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Applying Study on The Effects of Cooperative Learning on Teaching of Sit-Up in Junior Girl Students of High School

合作学习法在高一女生仰卧起坐练习中的应用研究

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Some people seem to be more prone to back problems caused by sit-ups than others.

对于有些人来说，仰卧起坐似乎更容易产生腰背问题。

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When you get out of bed each morning, do five sit-ups first.

每天早上起床时先做五个仰卧起坐。

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So sit-ups might lead to back pain, but only in some people.

所以，对一部分人来说，仰卧起坐可能导致背部疼痛。

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That's fifty more sit-ups. One, two.

那得再做五十个仰卧起坐。

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Sit-ups level a slow down and down trend is obvious.

仰卧起坐水平有下降趋势并且下降趋势明显。

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Comparison and Analysis of the Punching Shear Capacity in New and Old Specifications

新旧规范中混凝土抗冲切承载力验算的对比与分析

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Stiffness Matrix Formulation of Thick Beams Based on High Order Shear Deformation Theory

按高阶理论考虑剪切变形影响的梁单元刚度矩阵

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