drop off   (TTS發音)

1. fall off掉下

    My top button has dropped off and I can't find it. 我最上面的鈕扣掉了，找不到了。

2. become fewer or less；decline 減少；下降

    The number of students has been dropping off recently. 近來學生人數減少。

    Sales have been dropping off badly. 銷售額下降得厲害。

    Attendance at football matches has dropped off since the coming of television. 自有電視以來，到現場觀看足球比賽的人就減少了。

3. fall asleep睡著

    I was just dropping off when the telephone rang. 我剛要睡著，突然電話鈴響了。

4. let sb. get down from a vehicle；set down讓某人下車；放下

    Where do you want me to drop you off？你要我在哪兒讓你下車？

    Tom dropped me off at the postoffice and I've walked the rest of the way. 湯姆讓我在郵局下了車，剩下的路我就步行了。

    He said he would drop the parcel off at the post office. 他說他要在郵局寄一個包裹。

    I can drop the laundry off on my way to work. 我可以在上班的路上把要洗的東西送掉。