If you are completely present, the external forces are no longer a problem, because there is only you and that external force, in this moment, and not a million other things you need to worry about.

如果你是完全专注于眼前的事情，那么外部因素将不再是问题。因为在此刻，唯有你和那个外部因素，没有成千上万的其它事情需要你担忧的。

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Since the connection is made using a standard interface (JDBC in this case), applications do not need to worry about database implementation.

由于连接是通过标准接口(本例为JDBC)实现的，因此应用程序不需要担心数据库实现问题。

youdao

None of this means that the world need not worry about Iran's nuclear program.

这都不意味着世界不需要担心伊朗的核工程。

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And since Tesla CEO Elon Musk appears committed to making this vision a reality, investors need not worry about being forced to sell out of a winner too soon.

FORBES: Is Tesla the Next Apple?

But this does not mean there is no need to worry.

FORBES: Japan's Energy Dependence

This has some advantages: one is that the generals need not worry about finding money in the budget each year to keep their new headquarters freshly painted.

ECONOMIST: Defence spending