irrespective 不考虑的，不顾的(of) ：irrespective of consequences

irritate 激怒，使恼怒，使烦躁：be irritated by sb’s insolence

justify 证明。。。正当或有理,正确：Such behavior is justified on these grounds

knit 编织，编结：She’s knitting her husband a sweater

label 标签，标记，标号：put labels on your luggage

lag 走得慢，落后，滞留：Some of the runners began to lag

latent 潜在的，隐伏的，不易觉察的：a latent infection

leak 漏洞，裂缝：The pipe has got a leak

lean 斜，倾斜 the Leaning tower of Pisa

liable 会……的，有……倾向的 We are all liable to make mistakes

liberal 慷慨的，大方的 a liberal donation

limp 软的，松沓的 a young man in a limp gray sweater

linger逗留，徘徊 The children lingered at the zoo until closing time

long 长的，远的，久的 a long journey

lubricate 使润滑 lubricate the skin with cold cream

lump块，小方块 a lump of coal

macroscopic肉眼可见的

magnet 磁铁，磁铁石 The pin was extracted with a magnet

magnify 放大，扩大 I want to magnify this picture

maintain 维持，保持 maintain law and order

malfunction 发生功能障碍，发生障碍 If the computer malfunctions it fails to work properly

maltreat 粗暴地对待，虐待 We’ll not intervene unless the children are being physically maltreated