1·The rise of racism in America is a serious concern.
美洲种族主义的抬头是一个严重忧虑。
—— 《柯林斯英汉双解大词典》
2·So, this is becoming a serious concern.
所以，这已经成为一个严重问题。
3·This cannot but arouse our serious concern.
这不能不引起我们的严重关切。
4·This is and should be a cause for serious concern.
这成为而且应当成为我们严肃关注的原因。
5·This should be a serious concern for investors.
投资者应该严重关切。
6·Trainer safety with Tilikum is a serious concern.
Tilikum驯养员的安全是个很严肃的问题。
7·The problem deserves the serious concern of the whole society.
这个问题值得全社会严重关切。
8·Slower growth elsewhere in the world is a more serious concern.
更为严峻的是世界其他地区经济增长放缓。
9·Performance is a serious concern with touch-based applications.
触摸型应用把性能表现放在很重要的位置。
10·He admitted that the mounting cost was a matter of serious concern.
他承认不断上涨的成本是一件需要认真关注的事情。