introduce

• We introduce labels for the spin of electron as follows .
  我们引入电子自旋的标记如下。
• He introduced his speech with a humorous anecdote .
  他讲了一则幽默轶事作为讲演的引子。
• Let me introduce you to your interpreter and guide .
  我来给你介绍一下你们的翻译和导游。
• You have introduced a partly random component .
  你介绍了一个在一定程度上属于偶然的成分。
• It is convenient to introduce here the summation operator .
  应当在此介绍一下求和的算符。
• Thickeners were introduced for separating the acid and gypsum .
  用稠厚器来分离酸和石膏。
• An extraneous element is being introduced into the case .
  你们把与本案无关的话题扯进来了。
• "perhaps we should introduce ourselves," he said .
  “也许我们应该彼此来介绍一下，”他说。
• We must introduce some system into our office routine .
  我们须在我们日常公务中建立一些制度。
• This advanced method has been introduced in every factory .
  这种先进的操作方法已在各厂推行。