您要查找的是不是：
- He wore a mask so that no one should recognize him. 他戴了一个面罩，使别人认不出他来。
- It's a once in a lifetime chance. 这是一生难得的机会。
- She devoted her lifetime to the study of zoology. 她以毕生精力从事动物学研究。
- He met with many a setback in his lifetime. 他一生中遭到过许多挫折。
- Sham is sham and the mask must be stripped off. 假的就是假的，伪装应当剥去。
- He tried to mask his disappointment with a smile. 他试图以微笑来掩饰他的失望。
- The mask fitted tightly over his face. 他用面具把脸蒙得严严的。
- They did so under the mask of charity. 他们是打着慈善的幌子这么做的。
- A lifetime guarantee; lifetime membership. 终身保障; 终身会员资格
- Bayesian Reliability Analysis for Masked Lifetime Data 含有屏蔽寿命数据的贝叶斯可靠性分析
- He is a legend in his lifetime for his scientific discoveries. 他的科学发现使他一生成为传奇人物。
- The eating habits of a lifetime are not easily given up. 一生中长期形成的饮食习惯是不容易改掉的。
- Such feelings tend to remain submerge beneath a mask of social politeness. 在社交礼貌的掩盖下，这样的情感往往不会显露出来。
- Could you reconcile yourself to a lifetime of unemployment? 你能甘心一辈子失业吗?
- mask lifetime 掩模寿命
- In his own lifetime Galileo was the centre of the controversy. 伽利略在世之日一直是激烈的论战中心。
- Her sociable manner is really a mask for a very shy nature. 她那好交际的作风，实际上是她腼腆天性的伪装。
- He has gone through many a severe test during his lifetime. 他一生中经受过多次严峻的考验。
- For a moment his mask of benevolence fell and the real man was revealed. 一刹那间，他慈善的假面扔掉，露出了他的真面目。
- A base, ungenerous wretch who under the mask of friendship has undone me. 有个卑鄙、吝啬的家伙打着友谊的幌子把我毁了。
