These applications write their data only once but they read it one or more times and require these reads to be satisfied at streaming speeds. HDFS supports write-once-read-many semantics on files.

这些应用都是写数据一次，读却是一次到多次，并且读的速度要满足流式读。

youdao

Worldwide, people speak differently than they write, and texting -- quick, casual and only intended to be read once -- is actually a way of talking with your fingers.

CNN: LOL isn't funny anymore