Isn
abbr. 信息系统网络（InformationSystemNetwork）；综合业务网（IntegratedServicesNetwork）；国际信令网（InternationalSignalingNetwork）；内码（internal statement number）
🗣️ 情景例句
I can't figure out why he quit his job.
我不能理解他为什么要辞职。
Happy is the man that owes nothing.
无债一身轻。
Really? Which ones?
真的吗？哪种工作呢？