Optimistic transaction locking should not be used to update sets of rows in a single update statement, as error handling in this case is very difficult.

乐观事务锁不能用于在单个update语句中更新数据行集合，因此在这种情况下，很难进行错误处理。

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Such synergy estimates are almost always too optimistic, but that leaves a huge margin for error, particularly as the earnings multiples being paid look fairly modest-except in the case of Sun.

这样总体预计总显得很乐观，但也很可能造成了很大的误差，尤其是跨国公司的盈利看上去很一般—除了太阳微电子公司。

youdao

You are optimistic and enthusiastic about your ideas, but disinclined to read the fine print or study all the facts, which can result in an error in judgment.

对于自己的想法非常乐观与热情，因此不愿意读精细的蓝图或研究所有细节，但是这会导致判断的失误。

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