Put the bottle in a plastic bag in case of spillage.

　　把瓶子裝在塑料袋里，以免灑得到處都是。

　　How should I know where you've left your bag?

　　我怎么知道你把包丟在哪兒了？

　　Take this bag, and leave everything else to me.

　　把這個(gè)包拿走，其他所有東西都給我留下。

　　Could you watch my bags for me while I buy a paper?

　　我去買份報(bào)紙，你能替我照看一下我的包嗎？

　　Let me give you a hand with those bags.

　　我來幫你拎那些包吧。

　　Turn the bag inside out and let it dry.

　　把包翻過來晾干。

　　This bag was left behind after the class.

　　這個(gè)書包是有人下課后落下的。