Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
Ask-Bob-to sit-behind-me.
让鲍伯坐在我后面。
You have my word.
我保证。
There is a new type of machine which can produce colour copies.
有一种新型的机器能够制作出彩色复印件。