fire  (v inf) send away from employment, sack解雇

[例]  Our employment record is good in the community as we hardly ever fire anyone.

first aid emergency treatment administered to an injured or sick person before professional medical care is available急救

[例]  Effective first aid system is very important to a workplace.

firm  (adj)  (of price) steady or rising steadily 坚挺

[例] Gold shares remained firm today.

fiscal  (adj.) referring to tax财政的

[例]  What about this year’s fiscal tax?

fix  (v.) agree/set something决定

[例]  The price was fixed at $25.

fixtures (n. pl) equipment in a factory that cannot be moved固定设备,工夹具

[例]  Machines are fixtures of a factory.