Xanthyrone
丙烯基吡喃酮
🗣️ 情景例句
Where shall I put my signature?
我签在哪儿呀？
We would be glad to start business with you.
我们很高兴能与贵公司建立贸易往来。
Nevertheless,I managed to creep down into the living room for two days before anyone found me out.
不过开头两天我还是成功地蹑手蹑脚地来到楼下起居室，被谁也没发现。