Mr. Vales warned the passport-free travel in the EU is threatened unless external border control was improved.

瓦尔斯警告称除非各国家加强边境管控，否则欧盟国家的免签制度将会受到威胁。

Mr. Valls warned that passport free travel in the EU was threatened unless external border controls were improved.

瓦尔斯警告称除非各国家加强边境管控，否则欧盟国家的免签制度将会受到威胁。

Our cyber-roach was now neurologically wired for external control.

我们的网络蟑螂现在已通过神经连接进行外部控制。

You do have some external control over the pH in your stomach —at least temporarily— because you can directly neutralize some of the acid there with what you put in it.

你确实可以对胃部的酸碱值有些控制权，至少暂时如此，因为你可以直接用吃进胃里的东西抵消一些酸性。