Pentnucleotide
[医] 戊糖核甙酸(成药)
🗣️ 情景例句
I think aerobics is easy.
我觉得有氧运动很容易。
Excuse me! I'm sorry I startled you!
对不起！很抱歉，让你受惊了！
We're in Class Three, Grade One.
我们是在一年级，三班。