adverb免费
verb使自由,释放
adjective空闲的,有空;未占用的,空着的;免费的,不收费;自由的,自由自在;免受…的影响,摆脱(不快的事物)
adverbwithout payment
verbto allow somebody to leave a place where they were kept against their will
adjectivenot busy
adjectivenot being used
adjectiveIf something is free, you do not have to pay for it
adjectiveable to go where you want and do what you want; not under the control of anyone
adjectivewithout something bad