Ssrna
[化] 单链RNA
🗣️ 情景例句
I'm so tired, I have to take a nap when I get home.
我太累了，回到家后一定要睡上一会儿。
The doctor said I looked pale and tired.
医生说我看起来苍白和疲倦。
His previous attempts had been unsuccessful.
他以前的尝试没有成功。