Pentone
缬烯炔, 异戊烯炔
🗣️ 情景例句
Sometimes, by buying something cheap now, you will be costing yourself more in the long run.
有时候你花了很少钱买了便宜货，但它日后可能要花掉更多的钱。
A proper amount of exercise contributes to good health.
适度的运动有益于健康。
I've had enough of your garbage.
我听腻了你的废话。