textbook

n.课本，教科书

testes, testicle, testify, testily, testimonial, testimony, testiness, testing, testis, testy, tetanus, tetchily, tetchiness, tetchy, tete-a-tete, tether, tetr(a)-, Teutonic, Texas, text, textile, textual, textually, texture, textured, Thai, Thailand, thalidomide, Thames, than, thank, thank goodness, thank you, thank-you, thankful, thankfully, thankfulness, thankless, thanklessly, thanklessness,