It's only human nature to be worried about change.

　　對變革有憂(yōu)慮不過(guò)是人之常情。

　　The police are worried that the man may be armed.

　　警方擔心那個(gè)人可能攜帶著(zhù)武器。

　　I had the sense that he was worried about something.

　　我感覺(jué)他有心事。

　　Doctors are worried about the possible spread of the disease.

　　醫生擔心這疾病可能會(huì )蔓延。

　　Back at home, her parents were worried.

　　在家中，她的父母很擔心。

　　There was a worried expression on her face.

　　她臉上流露出擔心的神色。