lassitude

n. 无力，没精打采

largesse, largish, largo, lariat, lark, larkspur, larva, larval, laryngitis, larynx, Las Vegas, lasagne (also lasagna), Lascar, lascivious, lasciviously, lasciviousness, laser, lash, lashing, lass, lasso, last, last but not least, last name, last will and testament, lasting, lastly, lat, latch, latchkey, latchkey child, late, latecomer, lately, latency, latent, latent heat, latent image, latent period, later,