1. 苦心研究：iron out v.烫平, 消除(困难) | hammer away 苦心研究 | hinge on v.依赖于,靠...转动, 以...为转移
2. 连敲：Hamburg 汉堡 | hammer away 连敲 | hammer break 锤形衔铁断路器
3. 努力研究：gung ho非常积极的+about | hammer away努力研究 | hands are tied被限制、很忙,走不开
1. hammer away什么意思
1. When she turned away from him, he brought the hammer down on her head.