We need tighter security at the airport.

我们需要在机场实行更加严密的安全措施。

《牛津词典》

She also said tighter security was essential.

她也认为，周密的安全措施是必需的。

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The federal Transport Minister, Anthony Albanese, said he would not change the recent decision to ease restrictions on carry-on items, despite tighter security on flights to the US.

联邦交通部部长阿尔巴尼斯称，虽然前往美国的航班安检会更加严格，但他不会改变最近作出的放宽随身携带物品范围的决定。

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That proximity led authorities to shut down the airport while tighter security measures were put into place.

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Travel experts say people can adapt to tighter security requirements if the rules are clear and consistent.

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Since mid-September they have been further complicated by border tie-ups, tighter security checks and increased shipping costs.

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