帮忙翻译下几段文章，翻好另外高分

1.Withdrawal of offer means that the offeror, for some reason, withdraws his offer before it reaches the offeree or before it becomes effective. This may happen when the offeror finds that the offer he makes contains some mistake, or that the situation has changed which makes his offer unfavorable to him. The common practice is to make use of a faster means of communication to send the message of withdrawal so that it can reach the offeree earlier than the offer does.
1.撤销报价意思是，发盘人由于某种原因在报价到达受盘人处前或报价生效前撤销其报价。这可能会发生在发盘人发现他做出的报价包含了某些错误，或情况发生改变使得他的报价对他不利的时候。普遍的惯例是利用一个更快速的通讯方法来发送撤销信息，这样撤销信息能比报价更早到达受盘人。

2.The key to the operation of fund investment is to minimize risk while at the same time to maximize return. However, high return is usually accompanied by high risk while low risk is often followed by low return. Therefore, the correct handling of risk and return is required in the operation of fund investment. In modern investment theory and investment practice, the ba