His action is indicative of growing concern about the shortage of skilled labour.

他的行为显示对于熟练工人短缺现象的日益关注。

《柯林斯英汉双解大词典》

Even this, however, does not give him enough comfort for some things: he does not have an online banking account because of his concern about hacking risk.

但是，即便这样仍无法使他能够泰然接受某些事情：由于担心遭到黑客攻击的风险，他没有开设任何网上银行帐户。

youdao

I really didn't become interested in him until my parents expressed their concern about his age.

我其实对他没什么意思，直到我父母开始关注他的年龄。

youdao

(OMITTED) A lawyer from nearby Maryland, who did not want to give his name, engaged in an impromptu debate with Tea Party supporters and later expressed concern about some of their rhetoric.

VOA: standard.2010.04.15

It's out of loyalty to his work and concern about his family's safety, Bronstein said.

CNN: 'Nightmare' at home for SEAL who shot Osama bin Laden

He has been very clear about his concern about higher gas prices and higher oil prices, and what that means for American families.

WHITEHOUSE: Press Briefing

His lawyers have often expressed concern about his health in the past, usually demanding that he be moved out of solitary confinement.

BBC: Abdullah Ocalan is serving a life sentence for treason