您要查找的是不是：
- She's always to the fore at moments of crisis. 她在危急关头总是挺身而出。
- The theory of Proletarian poverty and the theory of crisis of Marx and Engles' were declared invalid, while its dialectic, that is Contradiction, is still valid. 马克思恩格斯的无产阶级贫困化理论、危机理论已宣告无效，马克思主义中依然有效的是辩证法，即矛盾学说。
- We always hold together in times of crisis. 我们在危难中总是团结一致。
- In times of crisis it's good to have a friend to turn to. 危难时好在有朋友可以投奔。
- Einstein put forward his new theory of relativity. 爱因斯坦提出了相对论的新学说。
- In times of crisis party members should close ranks. 在紧要关头，党员应该团结起来。
- Einstein's theory of relativity. 爱因斯坦的相对论。
- The Tory party always holds together in times of crisis. 保守党在紧要关头总是能团结一致。
- Do you agree to the wave theory of light? 你同意光的波动理论吗？
- He cavalierly dismisses the theory of both Freud and Jung. 他傲慢武断地斥贬佛洛依德和杨格二人的理论。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- Moscow could stoke the embers of crisis. 莫斯科能够使危机的余火重新烧旺。
- Faced a grave decision in a time of crisis. 在决定性时刻面临着重大的决定。
- Not having a sense of crisis is a maximal crisis. 没有危机感是最大的危机。
- Not everyone can understand Einstein's Theory of Relativity. 不是每个人都能读懂爱因斯坦的相对论的。
- They had faced a lot of crisis then. 当时他们面临了很多危机。
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
- NWA：in times of crisis, never worry alone. 冒一下险，找一下安全性的人。
- He discoursed impressively on Newton's theory of gravity. 他讲述了牛顿的引力定律，给人以深刻的印象。
- That egghead published a new theory of matter last month. 那位知识分子上个月发表了一个新的物质论。
