Fameflower
土人参属
🗣️ 情景例句
How long?
多久？
We must have your LC at least one month before the time of shipment.
我们必须在船运前一个月收到你们的信用证。
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）