tack² n [singular 单数] 1 a way of dealing with a problem, a difficult situation etc 〔处理问题、困境等的〕方法: If polite requests don't work, you'll have to try a different tack. 如果礼貌的请求不行，你就必须换另一种方法。 2 [C] AmE a THUMBTACK 【美】 图钉 3 [C] a small nail with a sharp point and a flat top 平头钉，大头钉: carpet tacks 地毯钉