substrate-mask

常见例句

• The substrate is first covered by a mask.
  首先在基片上覆盖一个掩膜片。
• 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。
• 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。
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