three-decker

n 1 (formerly) sailing-ship with three decks （旧时）三层甲板船. 2 anything with three layers, esp a sandwich or a cake 任何三层之物（尤指三明治或蛋糕）.

thoughtfulness, thoughtless, thoughtlessly, thoughtlessness, thousand, Thousand Island dressing, thousandfold, thousands of, thousandth, thrash, thrashing, thread, threadbare, threadlike, threat, threaten, threaten with, threatening, three, three-, three-legged, three-legged race, three-line whip, three-piece, three-ply, three-point turn, three-quarter, threefold, threepence, threepenny, threepenny bit, threescore, threesome, thresh, thresher, threshold, threw, thrift, thriftily, thriftiness,