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。
- The stethoscope is a medical instrument. 听诊器是一种医疗器械。
- This instrument monitors the patient's heartbeats. 这台仪器监听病人的心跳。
- 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。
- The king signed the instrument of abdication. 国王签署了逊位的文告。
- A similar board used as a percussion instrument. 敲击板用作打击乐器的一种类似的板
- This scientific instrument suffered severely. 这部科学仪器受到严重损坏。
- 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。
- Language is an instrument for communication. 语言是交际的手段。
- The compass is an instrument of navigation. 罗盘是航行仪器。
- The bagpipe is a sweet musical instrument. 风笛是一种听起来很悦耳的乐器。
- 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。
- The viola is a stringed instrument. 中提琴是一种弦乐器。
- 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。
- A telegraphic sending instrument. 发报器电报机中发射信号的仪器
- A mask, in the character of an old woman, joined them. 一个戴着假面具扮演老妇的人加入了他们的行列。
