We need to take a firm line on tobacco advertising.

　　我們需要對煙草廣告采取強硬的態度。

　　They hired a firm of consultants to design the new system.

　　他們請了一家咨詢公司來設計新的系統。

　　We have no firm evidence to support the case.

　　我們沒有確鑿的證據支持這個論點。

　　This product claims to firm your body in six weeks.

　　這個產品據稱能在六周內使身體強壯。

　　They took a firm stand against drugs in the school.

　　他們堅決反對校園吸毒現象。