详细解释:vt. 丢弃, 抛弃
vi. 垫牌
n. 垫牌, 抛弃
词型变化：
名词:discarder动词过去式:discarded过去分词:discarded现在分词:discarding第三人称单数:discards形容词:discardable词意辨析：
discard, scrap, shed这些动词都有“抛弃、丢弃”之意。
discard: 指把具体的东西抛掉不要，着重扔、丢的动作。
scrap: 指抛弃过时，不再有用的东西。
shed: 指毛发、皮肤、叶等经过某种自然的过程而脱落。英语解释：
名词 discard:
anything that is cast aside or discarded(cards) the act of throwing out a useless card or to failing to follow suitgetting rid something that is regarded as useless or undesirable同义词：throwing away