Penamecillin
[化] 培那西林; 青霉素G双酯; 青霉素G乙酰氧甲酯
🗣️ 情景例句
Do you follow me?
听懂我的意思没有？
His classical music is so quiet. I can't even hear it!
他的古典音乐幽静得听不见。
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。