Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
The cassette player and the tapes.
卡式录音机和录音带。
He knows most who speaks least.
大智者寡于言。
Many owners of private cars are going to offer 'free rides' to people on their way to work.
很多私人汽车的车主正准备为乘车上班的人们提供“免费乘车”的服务，