crab 名词复数:crabs 过去式:crabbed 过去分词:crabbed 现在进行时:crabbing 词形变化: 名词: crabber | 动词过去式: crabbed | 动词过去分词: crabbed | 动词现在分词: crabbing | 动词第三人称单数: crabs |