Unicel
二亚硝基五亚甲基四胺(发泡剂)
🗣️ 情景例句
He has been friendlier lately.
他近来更友好了。
I often listen to the radio at night.
我常常在晚上听收音机。
Ships may be delayed by storms; flights may be cancelled because of bad weather, but trains must be on time.
轮船船期可能因风暴而推延，飞机航班可能因恶劣天气而取消，唯有火车必然是准点的。