Viscusin
[化] 寄生毒素
🗣️ 情景例句
Choose which you please.
先你中意的好了。
Thank you, if it's not too much trouble.
谢谢了，如果不是太麻烦的话。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道，这样就解决了通风问题。