I'm worried about the safety of the treatment.

　　我擔(dān)心這種療法是否安全。

　　We're not too worried by these results.

　　我們對(duì)這些結(jié)果并不太擔(dān)心。

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

　　對(duì)變革有憂慮不過(guò)是人之常情。

　　I worry that I won't get into college.

　　我擔(dān)心自己進(jìn)不了大學(xué)。

　　I'm worried about the safety of the treatment.

　　我擔(dān)心這種療法是否安全。

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

　　對(duì)變革有憂慮不過(guò)是人之常情。