知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。The ASL fingerspelling offered here is most often useful for correct names of individuals and spots; It is usually used in some languages for concepts for which no sign is obtainable at that minute.知乎，让每一次点击都充满意义 —— �