1. again and again

再三地，反复地

eg. So interesting was this book that I read it again and again.

这本书是如此的有趣，以致于我读了一遍又一遍。

eg. You would be inclined to put that team on new projects again and again.

你可能会倾向于把这样的队伍一次又一次放到新项目中。

2. across the world

世界各地；全世界；整个世界

eg. And what we want to do is unleash the talent and creativity that exists across the world, in every community.

我们要做的是释放存在于全世界、存在于每一个社区的才能和创造力。

eg. The damage has not only been to the air the Chinese breath or the water in their rivers, but also to its reputation across the world.

受到损害不仅仅是这些中国人呼吸的空气，或者是在他们河流中的河水，而且是中国在整个世界的名声。

3. have to

必须；不得不；只好

eg. You have to consider what to do next.

你必须考虑下一步该做什么。

eg. You have to keep after your son if he refuses to be housebroken.

如果你儿子不服管教的话，你必须整天跟在他的身边。