send to
1.传送到
These file are send to your mailbox already.
这些文件已经发到你的邮箱了。

more than:
固定词组 ph.
1.多于
2.在...次以上
3.不只...
Hibernation is more than common sleep.
冬眠不止是一般睡眠。

in order to:
1.为了
We started early in order to arrive before dark.
为了在天黑前到达,我们很早就动身了。
We breathe in order to live.
为了生存，我们要呼吸。

happen to:
固定词组 ph.
1.发生于
I happen to know that professor.
我正好认识那位教授。

argue with:
1.和...争辩;和...争吵
He often argued with his father.
他经常和他父亲争辩。

drop off
1.让...下车
Please drop me off at the bank.
请让我在银行下车。
2.减少;下降
The business of the company was dropping off.
这家公司的生意日益清淡。
3.睡着
She dropped off during the sermon.
她在听布道时睡着了。

drop-off
名词 n.
1.急下降