buckle down to(v.+adv.+prep.) 开始认真做start to do sth seriously ▲buckle down to sth I'd better buckle down to those reports.我最好认真静下来努力完成那些报告。
用作不及物动词 ▲S+~(+A) The two ends buckle at the back.带子两端在背后扣起来。 用作及物动词 ▲S+~+n./pron. The accident buckled the wheel of my bicycle.我自行车的轮子在事故中弄弯了。
His belt has a buckle with his name engraved on it.他皮带的搭扣上刻着他的名字。