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
She suffered terribly when her son was killed.
儿子被杀，她痛苦至极。
These buildings are supposed to be earth quakeproof.
这些建筑物是耐震建筑才对。
The order will be mailed to you next week.
下星期就寄给你们。