十、以J開頭的核心詞匯
    justify 證明。。。正當(dāng)或有理,正確：Such behavior is justified on these grounds
    十一、以K開頭的核心詞匯
    knit 編織，編結(jié)：She’s knitting her husband a sweater
    十二、以L開頭的核心詞匯
    label 標(biāo)簽，標(biāo)記，標(biāo)號：put labels on your luggage
    lag 走得慢，落后，滯留：Some of the runners began to lag
    latent 潛在的，隱伏的，不易覺察的：a latent infection
    leak 漏洞，裂縫：The pipe has got a leak
    lean 斜，傾斜 the Leaning tower of Pisa
    liable 會……的，有……傾向的 We are all liable to make mistakes
    liberal 慷慨的，大方的 a liberal donation
    limp 軟的，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 長的，遠(yuǎn)的，久的 a long journey
    lubricate 使?jié)櫥?lubricate the skin with cold cream
    lump塊，小方塊 a lump of coal