Polyetherin
多醚菌素
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
No man knows when he shall die, although he knows he must die.
纵然知其难免一死，人却难料何时身亡。
Yes, speaking. Just a moment. Let me turn the music down. There, that's better.
是的，我就是。请稍等。让我把音量关小一点。你瞧，好多啦。