1.shallow bays 浅海湾
Shrimps, scallops, and pearls are raised in shallow bays and basins for local use and export.
在浅海湾及盆地养殖着的虾、扇贝和珍珠等，一部分用于本地人的利用，一部分用于出口。

2.come alive 活跃起来
You see them come alive on the screen in that way and it makes you very happy.
看到他们变得活跃起来，这将会让你感到很开心。

3.roll up 卷起
The jacket was too big for him so he rolled up the cuffs.
这件夹克对他来说太大了，所以他卷起了袖口。