?? 詞語組成解析
??? 情景例句
I've got it.
我都記下了。
I did composition last month.
我上個月做作文。
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因為土壤下面有一層堅硬的巖石,他們的營救工作僅用幾個小時就可以完成了。