They carried out security checks at the airport.

他们在机场实行了安全检查。

《牛津词典》

Every day, USPS processes, on average, 493.4 million pieces of mail—anything from postcards to Social Security checks to medicine.

美国邮政局平均每天处理4.934亿封邮件，从明信片到社保支票再到药品，无所不包。

youdao

Every day, USPS processes, on average, 493.4 million pieces of mail —anything from postcards to Social Security checks to medicine.

每天，美国邮政平均处理4.934亿件邮件--从明信片到社保支票再到药品，无所不包。

youdao

The Greek Cypriots canceled the latest session Thursday after Turkish Cypriot authorities held up a bus convoy of Greek pilgrims for lengthy security checks as they sought to cross the dividing line between the communities.

VOA: standard.2009.09.05

Shenzhen Airlines and Juneyao Airlines landed safely after some delays due to security checks.

WSJ: Chinese Airlines Receive Flight Threats

Precheck passengers who displayed suspicious behavior would still be subjected to full security checks.

CNN: SHARE THIS

Some 2.5 million people in Pennsylvania depend on their Social Security checks to keep it together.

FORBES: Pat Toomey's "Pay China First" Proposal