We need to take a firm line on tobacco advertising.
我们需要对烟草广告采取强硬的态度。
They hired a firm of consultants to design the new system.
他们请了一家咨询公司来设计新的.系统。
We have no firm evidence to support the case.
我们没有确凿的证据支持这个论点。
This product claims to firm your body in six weeks.
这个产品据称能在六周内使身体强壮。
They took a firm stand against drugs in the school.
他们坚决反对校园吸毒现象。