XFDL forms can provide sophisticated error checking as the user fills out the form, preventing possible errors (and wasted time as incomplete or erroneous forms are returned to the sender).

在用户填写 XFDL 表单时，表单能够提供复杂的错误检查，这样可以避免可能的错误（并避免由于将不完全或错误的表单返回给发送者而浪费时间）。

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If a servlet takes longer than that time to send out a response, GAE generates an error in the form of an HTTP 500 code.

如果servlet采取更长的时间来发出响应，则gae会生成用HTTP 500代码形式表现的错误。

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And due to the inertia of thinking, and sometimes even if has a fault is difficult to found out, and check the error of time the proportion of new do it again to spend more time.

而且由于思维惯性的原因，有时即便有错也很难查出来，还有的时候检查错误的时间比重新再做一遍花的时间还要多。

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Three time champion Arantxa Sanchez-Vicario dumped an error-prone Venus Williams out of the French Open to progress to the semi-finals.

BBC: Sanchez-Vicario grinds through