1. 努力工作：work loose 松掉 | work off steam 努力工作 | work off 渐渐地清除
2. 拿出精力工作, 发泄某种感情：under steam 被汽力推动着, 在航行中拿出精神 | with all one's (full) steam on 开足马力 | work off steam 拿出精力工作, 发泄某种感情
3. 使劲干活：pick up steam (车)渐渐加速 | run out of steam 精疲力竭 | work off steam 使劲干活