But overall, those changes can be pretty helpful.

但整体来说这些变化都是很有益的
How many of you got your clickers?

你们有多少人带了表决器
Anybody have any problem getting the clickers?

有人没办法弄一个吗
Okay. Those of you who have your clickers let's pull them out,

好带了表决器的人把它拿出来
what I'd like you to do, if anybody doesn't have your clicker yet,

如果有人还没有表决器我希望
please bring it to class. Please get one and bring it to class

你能弄一个然后把它带到课上
and we're only going to do one these exercise with the clickers today just as a test,

我们今天只要用表决器做一个测试
but in subsequent classes we'll be using them quite a lot.

但之后的课中我们将多次使用到它
I'd like to talk about the leading causes of death

现在我们要探讨一下死亡的主要原因
and we'll compare leading of causes of death

并且将1900年和
in 1900 to leading causes of death today.

现在的主要死亡原因做个比较
It's possible that the causes of death are the same;

可能死亡原因还是一样的