4.) 详细说明[(+on/upon)]

distribute

vt.

3.) 膨胀

Water expands when it freezes.

水结冰时体积膨胀。

A tire expands when you pump air into it.

轮胎打了气就会胀大。

2.) 扩张;发展;增长

In ten years the city’s population expanded by 12%.

十年之中,该城人口增加了百分之十二。

1.) 展开,张开

4.) 详述

They have expanded my view on the question.

他们已更充分地阐明了我对这个问题的观点。

vi.

3.) 扩大;扩充;发展

He is thinking of expanding his business.

他正考虑扩展他的生意。

2.) 使膨胀;使扩张

1.) 展开,张开(帆,翅等)

The eagle expanded its wings.

老鹰展开翅膀。

2.) 退出;退学

She dropped out of school to become a waitress.

她退学去当女招待。

expand

vt.

1.) 脱离

Luckily, I dropped out before the deal turned sour.

很幸运的,在交易变坏前我已退出了。

One of my teeth has dropped out.

我的一只牙齿掉了。