just now 刚才,一会儿以前 keep an eye on 留意,照看 keep back 阻止,阻挡; 隐瞒,保留 keep down 控制,压制,镇压; 压低,放低(声音) keep house 管理家务 keep in touch 保持联系 keep off 不接近,避开 keep on 继续,保持 keep one’s word 守信用 keep out of 躲开,置身…之外 keep track 通晓事态,注意动向 keep up with 跟上,不落后 keep up 继续,坚持; 保持,维持 keep…in mind 记住… knock down 撞倒,击倒 knock out 打昏,淘汰 laugh at 讥笑,嘲笑 lay down 放下,拟订;铺设 lay off (临时)解雇; 休息 lay out 安排,布置,设计; 摆开,陈列,展示 lead the way 带路,引路 lead to 通向;导致,引起 learn…by heart 牢记… leave alone 听其自然, 不要去管 leave behind 落后;把…留下;忘带 leave out 省略,遗漏 let alone 听其自然,不要去管; 更不用说 let down 放下,降低;使失望 let go 放开,松手 let in 让…进入,放…进来 let off 放(炮,烟火),开枪