tightened
v.
收紧( tighten的过去式和过去分词 );
（使）变紧;
（使）绷紧;
加紧;
例句:
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Stefano's grip tightened and his tone became colder.
斯蒂芬诺的手抓得更紧了，语气也更冷了。
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Security tightened in the capital in readiness for the president's arrival.
首都加强了警备，准备迎接总统的到来。
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The cables tightened and he was lifted gradually from the deck.
缆绳绷紧了，他被慢慢地吊离了甲板。
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Security was tightened in Britain, France and Germany.
来自VOA
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Looks like he tightened up trying to catch him?
来自BBC
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No doubt they are being tightened at this moment.
来自BBC