一次 | yī cì | first / first time / once / (math.) linear (of degree one) | |
首次 | shǒu cì | first / first time / for the first time | |
首度 | shǒu dù | first time | |
头道 | tóu dào | first time / first (round, course, coat of paint etc) | |
头一回 | tóu yī huí | the first time / for the first time | |
第一次 | dì yī cì | the first time / first / number one | |
第一例 | dì yī lì | first case / first instance / first time (sth is done) |