例句：
那天晚上我只睡了大約半個小時。
I only slept about half an hour that night.
我看我們需要大約20把椅子。
We'll need about 20 chairs, I should think.
機場在大約20公里遠的地方。
The airport was about 20 kilometres distant.
那可能會花費你大約五十美元。
That would probably cost you about fifty bucks.
例句：
那天晚上我只睡了大約半個小時。
I only slept about half an hour that night.
我看我們需要大約20把椅子。
We'll need about 20 chairs, I should think.
機場在大約20公里遠的地方。
The airport was about 20 kilometres distant.
那可能會花費你大約五十美元。
That would probably cost you about fifty bucks.