Trump-card
n. 王牌（最有效的谋略）
📖 牛津释义
trump-card
n
(a) card of the suit that is trumps 王牌; 将牌; 主牌.
(b) (fig 比喻) way of gaining what one wants, esp after trying other ways; most valuable resource 为达到目的采取的方法（尤指已试过其他方法）; 最有效的一招
Finally she played her trump-card and threatened to resign. 最後她使出了绝招, 扬言要辞职.
🧩 词语组成解析
trump
[trʌmp;'trʌmp,trʌmp]
n. 王牌，法宝;有效手段;<古，诗>喇叭，号声;<口>好人;
vt. 打出王牌赢;胜过;
vi. 出王牌;捏造，编造;吹喇叭;
card
[kɑrd]
n. 卡片;纸牌;明信片;信用卡;
vt. 记于卡片上;
🗣️ 情景例句
Being a mother is not easy,
当一个母亲真不容易，
We can supply from stock and will have no trouble in meeting your delivery date.
我们可提供现货并按你方所定日期交货。
We may have to back order three items on this order.
这次订的货有三个项目必须要晚点才能交货。