Js
abbr. 射流研究
??? 情景例句
The little boy held his mother's hand firmly when crossing the street.
那小男孩過(guò)馬路時(shí)緊抓著母親的手。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
We gently woke him up and asked him to ferry us to the other side.
我們輕輕地把他喚醒，請(qǐng)他把我們擺渡過(guò)溪。