| insist on/upon sth | 坚决要求 |
| instead of | 代替；不是…而是… |
| into action | 实行；实施 |
| join hands | 携手，联手；齐心协力 |
| join in | 加入；参加 |
| join together | 结合；连接 |
| join up | 联合起来；连接；参军 |
| just a moment | 等一会儿，稍等一下 |
| just about | 几乎；近乎；差不多 |
| just as | 正如；正像；正当；正当…的时候 |
| just as well | 无妨；幸好 |
| just in case | 以防万一 |
| just in time | 及时；恰好；正好 |
| just now | 刚才；眼下 |
| just the same | 还是；完全一样；照旧 |
| keep a diary | 记日记 |
| keep a promise | 信守承诺 |
| keep away | 防范；不接近 |
| keep back | 留存；保留；隐瞒；保密 |
| keep in | 隐瞒，隐藏；抑制；继续燃烧 |