roost 名词复数:roosts 过去式:roosted 过去分词:roosted 现在进行时:roosting 词形变化: 动词过去式: roosted | 动词过去分词: roosted | 动词现在分词: roosting | 动词第三人称单数: roosts | 词义辨析: 同义参见: nest den habitat seat bed residence quarter