Ecn
abbr. 工程变更通知（engineering change notice）；显示拥塞通告（Explicit Congestion Notification）；电子通讯网络（Electronic Communication Networks）；应急通信网络（Emergency Communications Network）；表皮细胞坏死溶解（epidermal cell necrolysis）
🗣️ 情景例句
it's exactly as it was when we were married!
它跟我们结婚的时候一模一样！
But she is now accustomed to it.
不过她现在已经适应了。
Not very popular. We play American football in the USA.
不很受欢迎。在美国我们踢美式足球。