a.

1. 工作的；劳动的
2. 有职业的
3. 操作的
4. 可行的；有效的

n.

1. 工作；劳动
2. 运转；活动
3. 加工；制作
4. 操纵；经营
5. 开采
6. （有时用复数）矿；巷道；采石场

adj.

1. having paid employment.
   ▸engaged in manual labour.
   ▸(of an animal) used in farming, hunting, or for guard duties.
2. functioning or able to function.
   ▸(of parts of a machine) moving and causing a machine to operate.
3. good enough as the basis for work or argument and likely to be developed or improved later:
   a working title.

n.

1. a mine or a part of a mine from which minerals are being extracted.
2. (workings) the way in which a machine, organization, or system operates.
   ▸the record of the successive calculations made in solving a mathematical problem.
3. a scheduled duty or trip performed by a locomotive, bus, etc.