Ncmec
abbr. National Center for Missing and Expioited Children 全国失踪和被剥削儿童中心
🗣️ 情景例句
Always full of surprises,
总是出人意表
Love asks faith,and faith firmness.
爱情要求信任，信任要求坚定。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）