Riboswitch
n. 核开关
🗣️ 情景例句
I haven't thought about living anywhere else.
我还没有考虑要住到别的地方去。
I wondered if you could buy me some pencils?
我不知道你是否能替我买铅笔？
Forty-two years later a tunnel was actually begun.
42年以后，隧道实际已经开始建了。