Quadricovalent
四配价的
🗣️ 情景例句
You handed them to me.
你将它们给了我。
Rowing builds up arm muscles.
划船能够锻炼臂力。
The turtle at last gives up by pulling his feet under his shell and the game is over.
海龟终于屈服了，将4条腿缩进壳内。