相关单词同义词remount to, go back, 近义词 predate 在日期上早于..., date 日期, validate 使生效, sign 手势, stamp 邮票临近词backfat, back, backplane slot, back financing, back flashover, back connected, back-blading, back to nature, back-end man, back arc basin, back-up item, back-putting相似词backchannel, backchat, backcomb, backcountry, backdoor, backdrop, -backed, backed up, 返回 backdate