查询词典 knock sth down

keep one's head down：不出头露面, 避免引人注意

keep sth. in one's head 记住 | keep one's head down 不出头露面, 避免引人注意 | knock head 叩头

knock into sth：撞在...上

knock down 撞倒 | knock into sth 撞在...上 | knock out of... 把...从...中敲出来

knock sth down：降低价格,拆除,缩减开支

knock into sb 撞到某人身上;偶然遇到 | knock sth down 降低价格,拆除,缩减开支 | knock off 下班,停工,很快地写出文章

knock sth off sp = knock sth down from sp：把某物从某地撞下来

38. knock our books and pens off the desks 把我们的书和笔从课桌上撞下来 | 39. knock sth off sp = knock sth down from sp 把某物从某地撞下来 | 40. think of 想起,想到

lay down one's life for：为...献出生命

knock out 击倒,击昏 | lay down one's life for 为......献出生命 | lay emphasis on sth 强调

weak convergence of probability distribution：概率分布的弱收敛

weak color 弱色 | weak convergence of probability distribution 概率分布的弱收敛 | weak inhibited type 弱抑制型

Florescent lamp：荧光灯

Swing arm wall lamp摇臂灯 | Florescent lamp荧光灯 | Acrylic lamp亚克力灯