Put the bottle in a plastic bag in case of spillage.
把瓶子装在塑料袋里，以免洒得到处都是。
How should I know where you've left your bag?
我怎么知道你把包丢在哪儿了？
Take this bag, and leave everything else to me.
把这个包拿走，其他所有东西都给我留下。
Could you watch my bags for me while I buy a paper?
我去买份报纸，你能替我照看一下我的包吗？