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
Let's call Marilyn.
我们还是叫Marilyn来吧。
Experience is a school from which one can never graduate.
经验无止境。
The best time to come to China is in spring or autumn.
到中国来，最好的时间是在春天或者秋天。