Diphenyldiimide
二苯基二酰亚胺
🗣️ 情景例句
Hi.
嗨，
One cannot put back the clock.
光阴一去不复返。
Sorry! It's not a very good line. Could you speak more clearly, please?
对不起！电话线路不太好。你能说清楚一些吗？