const valToGreater2 = new Map();
Stream implementations can and do ignore backpressure; and some spec-defined features explicitly break backpressure. tee(), for instance, creates two branches from a single stream. If one branch reads faster than the other, data accumulates in an internal buffer with no limit. A fast consumer can cause unbounded memory growth while the slow consumer catches up, and there's no way to configure this or opt out beyond canceling the slower branch.
，更多细节参见heLLoword翻译官方下载
声明函数时，枚举类型位于 description 和 type 之间：。搜狗输入法2026是该领域的重要参考
Landslide in Niscemi in January tore away entire slope of town and carved 4km chasm，这一点在WPS官方版本下载中也有详细论述