He explains that while deep sleep is characterized by very regular breathing with minimal variations, REM sleep (the phase during which we dream) has a much more erratic breathing pattern.
深度的睡眠表现为伴随着细微变化的非常均匀的呼吸，而REM睡眠(我们做梦时的睡眠模式)的呼吸模式则相对不稳定。
The ups and downs of polo in ancient China is a typical display of the regular pattern of "normal curve" popularizing nowadays, and has formed a whole period of popularity.
中国古代马球运动兴衰演变的过程，典型地体现出时尚流行的“常态曲线”规律，构成了一个完整的流行周期；
If you are using a regular expression pattern that has already been defined in another static method call, the regular expression engine will retrieve it from the cache.
如果您使用其他静态方法呼叫中已定义的规则运算式模式，规则运算式引擎就会从快取中撷取这个规则运算式模式。
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