tan vt.(使)晒成棕褐色; 鞣(革); top vt.形成顶部; 达到…的顶端; 处于…的最前头; 领导; 而tan top连用被用为棕色背心
追问
应该是字幕拼写错误了,tanktop
追答
必应网就是这么解释的 Mother tanned easily and deeply, and she got most of her tan while digging dirt around her flowers in a tank top and shorts. 母亲很容易晒黑。她常常穿件短背心和短裤在花地里刨土,于是她的皮肤就被晒成棕色。