供给线路的麻烦也是危险关系的另一种信号，但美国及其盟友必须保持在阿富汗的持续战斗。

The supply-route troubles are yet another sign of the precarious relationships that the United States and its allies must maintain to continue the fight in Afghanistan.

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然而，演奏者如果没有帮助凭直觉演奏的那种脑线路，就需要经常练习才能保持不错的水平。

Unless the player has the kind of brain circuitry that facilitates intuitive playing, however, lots of regular practice is required to maintain a reasonable level.

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为了达到透明，你需要确保与接收代码的客户之间保持一条清晰的通信线路。

In order to be transparent, you need to make sure that you have a clear line of communication with the clients receiving your code.

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