Convertion
[计] 规范
🗣️ 情景例句
We should revise our protectionist practices in trade, and promote free trade and competition.
我们应该修改我们的贸易保护主义做法，推广自由贸易和竞争。
Rivers need a spring.
大河要有源头。
as the wave leaves the particles behind back to its starting point again.
当波浪把微粒留在身后时又回到出发点。