Uca
abbr. upper control area 上部控制区
🗣️ 情景例句
I haven't decided whether I will go camping or not, but it is certainly possible.
我还没决定是否去露营，但还是有可能去的。
Two is company, but three is none.
两人成为伴，三人不结侣。
Moral? There is no one 'right' way to structure a portfolio.
这是个道德问题吗？没有一种完全"正确的方法来排列这种投资组合，