buckle down to start working very hard开始认真从事; 埋头于:[+ to ]•You'd better buckle down to some revision now.你现在最好坐下来复习复习。 buckle down tackle a task with determination 倾注全力, 认真干： they will buckle down to negotiations over the next few months. 接下来的几个月他们将认真开始谈判。 |