kangaroo n. an Australian animal which jumps along on its large back legs
and which carries its young in a special pocket of flesh袋鼠
keep v. 1. to have without the need of returning 保留; 保有
2. to have for some time or for more time (暂时)保管; 有效
3. v.+ ing: to (cause to) stay, remain, or continue
(使)保持;(使)持续(某一状态)
4. to take care of and provide with food, money, etc. 照顾;供养
5. to own 经营;饲养
6. to hold back, prevent 耽误; 阻止
