Several colleges in our study have rigid rules about student conduct.(我们调查中的几所学院对学生行为举止都有过于严格的规定。)
Traditionally, robots have been very hard, made of metal and other rigid material.(传统上，机器人很硬，由金属和其他刚性材料制成。)
People who score on personality tests as more sympathetic cry more than those who are more rigid or have more self-control.(在性格测试中得分较高，也就是更有同情心的人，比性格刚强或自我控制能力较强的人更容易哭。)
Paintings must have rigid stretchers so that the canvas will be taut, and the paint must not deteriorate, crack, or discolor.(画必须有坚硬的画架，这样画布才会绷紧，而且颜料不能变质、开裂或变色。)
She sat upright, her body rigid with fear.(她直挺挺地坐着，吓得浑身发僵。)
She was a fairly rigid person who had strong religious views.(她是个相当刻板、有着很强宗教观念的人。)
He was weaned on a diet of rigid discipline and duty.(他自幼受到严格纪律和职责的约束。)
She is forced to battle against a harsh employer and a rigid social order.(她被迫与苛刻的雇主和固化的社会秩序作斗争。)
He was rigid and unbending.(他刻板而严厉。)
For example, the lungs and the heart muscle expand less successfully, the blood vessels become increasingly rigid, and the ligaments and tendons tighten.(例如，肺部和心脏肌肉扩张不太成功，血管变得越来越僵硬，韧带和肌腱收紧。)
