Ponton
n. 平底船, 浮筒
✅ 同义词
🗣️ 情景例句
Is this your best price?
这是你们最优惠的价格吗？
This product is doing very well in foreign countries.
这种产品在国外很畅销。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，