| tóu | to throw/to send/to invest |
| 投 | to throw to send to invest |
| 投下阴影 | to shadow; to overcloud |
| 投中 | to throw at a target to shoot (in soccer, basketball etc) |
| 投书 | to deliver to send a letter a letter (of complaint, opinion etc) |
| 投井 | drown oneself in a well |
| 投井下石 | to throw stones at sb who fell down a well (idiom); to hit a person who is down |
| 投产 | to put into production to put into operation |
| 投亲 | go and live with relatives; seek refuge with relatives |
| 投亲靠友 | go and live with one's relatives or friends |
| 投保 | to take out insurance to insure |
| 投保书 | an insurance application form; an insurance cover note |
| 投保人 | policy holder insured person |
| 投保价值 | insured value |
| 投保单 | proposal form; insurance slip; application for insurance; coverage note; risk coverage note; insurance application form |
| 投保方 | policyholder (insurance) |
| 投保者 | risk |
| 投保额 | sum insured |
| 投信口 | a letter drop; (Am.) a drop |
| 投入 | to throw into to put into to throw oneself into |
| 投入-产出 | input-output; input-output |