Clue: a fact or a piece of evidence that helps you discover the answer to a problem (问题答案的)线索,提示
Diet may hold the clue to the causes of migraine.
饮食习惯有可能导致偏头痛.
Meaningful: intended to communicate or express sth to sb, without any words being spoken 意味深长的;意在言外的
She gave me a meaningful look.
她意味深长地看了我一眼.
Water: to pour water on plants, etc. 给...浇水;灌溉
to water the plants/garden 给花草/花园浇水
parting gifts:送别的礼物
have no clue:没有思路,头绪
lose the charm:失去了吸引力
care about somebody:珍惜某人
at the border:在边界处