The number of these colorful butterflies has dropped in recent years.

近年来，这些彩色蝴蝶的数量有所下降。

According to the rule, used batteries must be dropped in the red bin for harmful wastes.

根据规定，废旧电池必须扔进红色的有害废物箱。

He dropped in for a chat.

他顺道来访，闲谈了一番。

The celery dropped in the hot oil with a crack.

欻啦一声，芹菜倒进了滚烫的油锅。

I dropped in on him on my way home.

我在回来的路上趁便去他家看了看。

Sometimes he dropped in on his uncle.

有时他顺路去看望叔叔。

I happened to pass by, so I dropped in.

我刚巧路过, 顺便拜访您.

Prices dropped in the first half of the year.

上半年物价有所下降.

That afternoon Juanita dropped in to brighten Carol.

那天下午,朱恩妮塔跑来串门,给卡罗尔解闷.

Well, that vision kind of haunted me as I grew up and I went to school and I dropped out and dropped in and started my family.

那样的图景在我的脑海中挥之不去，伴随着我成长、上学、退学、开始组建我自己的家庭。