So you should have gotten two handouts as you came in, and if you didn't, please raise your hand and a TA will come to you and get you that second handout.

因此你们应该都在进来的时候拿到了两份讲义，如果你没有，请举手示意，助教会过去,给你第二份讲义。

麻省理工公开课 - 化学原理课程节选