何时买出，要遵守买出规则，在上升的途中获取利润。
Follow selling rules on when to sell and take profit on the way up.
在哪里买何时买、从谁手里买、以什么币种付款，都会对总成本产生巨大的影响。
Where and when you buy, who you buy from and what currency you pay can make a massive difference when it comes to calculating total spend.
理论上，他们的原则一样，何时买，何时卖，买卖多少，然而，总是有一些例外情况发生。
In theory they all had the same rules for selecting markets to trade, when to enter and exit, and how much to buy and sell. However, there were ongoing incidents of exceptions to the rules.
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