Never buy all at once. Never sell all at once.
不要一下子全部买入，也不要一下子全部售出。
At 19 he began to buy and sell properties.
19岁的时候他就开始购买和出售地产。
We will create Buy and Sell messages at a later stage.
我们将在稍后的阶段中创建Buy和Sell消息。
On a screen, they see the other traders are offering to sell or buy at.
在一个屏幕上，他们看到其他交易者提供出售或购买。
You can also buy domains cheap and then sell at a premium.
你也可以购买便宜的域名，然后溢价出售。
They buy tickets by the bucket and sell them at a profit.
他们买了很多票，并且再卖掉以获取利润。
B:We buy at RMB13.28 and sell at RMB13.32.
一英镑对13.28人民币买进,13.32卖出.
But now, we just sell them at the price we buy.
但是，现在我们只能以进货价卖出去。
They buy a lot of ticket at the normal price and then sell them at a huge profit.
他们以正常价格买进许多球票，再以高价卖出获得高额利润。
They buy a lot of ticket at the normal price and then sell them at a huge profit.
他们以正常价格买进许多球票，再以高价卖出获得高额利润。
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