例句：

　　The soldiers concerned were unarmed at the time.

　　有關士兵當時未攜帶武器。

　　He knew her weak spot where Steve was concerned.

　　他了解她在與史蒂夫有關事情方面的缺點。

　　He didn't seem in the least concerned for her safety.

　　對她的安全他似乎一點都不擔心。