Firs
[計(jì)] 先前的
??? 情景例句
We can write letters. It's cheaper than calling.
我們可以寫(xiě)信就好，那比打電話便宜。
I eat dinner at about 7 o'clock.
我在大約7點(diǎn)鐘吃晚飯。
This has not been easy because I own over a thousand books.
但這并不容易，因?yàn)槲矣?，000多本書(shū)。