单词	toughen
释义	tough·en (tŭfən) tr. & intr.v. tough·ened, tough·en·ing, tough·ens To make or become tough. See Synonyms at harden. toughen·er n.
随便看	throw under the bus throw up throw up hands throw up (one's) hands throw up one's hands throw-weight throw weight throw weight around thru thrum thrum thrush thrush thrust thrust fault thrustful thrust stage thruway Thu. Thucydides thud thug Thuggee thuggery thuggish

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