Ssdna
[化] 单链DNA
🗣️ 情景例句
He was left in charge of the shop while the manager was away.
经理不在时他负责这个商店。
Better go to bed supperless than rise in debt.
宁可饿肚子，切莫去借债。
An Indian came into the waiting room, and walked quickly to the doctor's door.
一个印度人走进候诊室，快步朝医生的门口走去。