Callao
卡亚俄[秘鲁西部港市]
🗣️ 情景例句
A very good question.
一个非常好的问题。
We know that you are leading exporters of coal and you can provide the quantity we need.
我们知道贵方是主要煤炭出口商，能满足我们的需求量。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。