Trypanthrin
色蒽菌素, 白蒽菌素
🗣️ 情景例句
Sorry, I'm afraid I'm busy tonight.
对不起， 今晚我恐怕没空。
One way or a round trip ticket?
单程票还是双程票呢？
Two of his assistants had been working busily since eight o'clock and had only just finished.
他手下两名店员从早上8点就开始忙碌，这时刚刚布置完毕。