If you cannot count, you cannot trade.

如果你不会算术，你就不会交易。

youdao

When you feel a surge of confidence in a new trade, it is hard to think of the downside risk, but if you don't do it, you cannot protect yourself.

如果你对新交易感觉很自信，很难想到下跌的风险，但如果你想不到，你就不能保护自己。

youdao

You must have your stop in place, and the size of your trade must be such that you cannot get financially hurt in the case of a reversal.

你必须提前下好止损单，而且你的仓位大小要合适，不能因为反转而受伤。

youdao

Keep in mind that you cannot trade or manage a stock portfolio between sound bites on financial TV.

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You cannot trade weather, so the next best thing is to trade something that behaves very like it: gas (as it happens, gas prices, which according to Enron are closely correlated with temperature).

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The basic point is that you just cannot mix free trade and price fixing.

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