be put down to归因于
Be hunkered down to潜下心来
be slowed down to把速度降低到
be all down to sth归咎于
be down to the wire拮据的
be down-to-earth-脚踏实地
Pls be down-to-earth藤井树
be down -to-earth脚踏实地
be down-to-eartistich踏坚固实