1. 努力研读：bolt from the blue 晴天霹雳 | bone up on 努力研读 | born with a silver spoon in one's mouth 出生富贵

2. 钻研：make no bones about毫不犹疑;毫无顾忌 | bone up on钻研 | 58.bone glue 骨胶

3. 专心致志于：bone shaker 旧式自行车 | bone up on 专心致志于 | bone 骨

4. 临时抱佛脚,临阵磨枪,考前温习：Idioms and Expressions 成语和表达法 | bone up on 临时抱佛脚,临阵磨枪,考前温习 | burn the midnight oil 开夜车