The AHA's chart still USES the 220 minus age formula, but has a wider zone of 50 to 85 percent of your Max heart rate.
该协会的表中仍然沿用220减去年龄的算法，但是讲区间扩大到了最高心率的50%到85%。
Max, who is greying, has a veterinary birth certificate to prove his age and is awaiting official confirmation from Guinness World Records。
马克斯毛发呈灰色，他的动物出生证明足以证明它的年龄。 目前马克斯正等待吉尼斯世界纪录的官方确认。
However, if max-age (or corollary s-maxmag for public caches) is set, its value overrules Expires.
但是，如果设置了max -age(或者对于公共缓存来说必然使用的s -maxmag)，则它的值将撤销Expires。
Add Expires and max-age directive of Cache-Control HTTP Header in server responses.
在HTTP头信息里加入缓存控制过期和最大存活时间标记。
Max, who is greying, has a veterinary birth certificate to prove his age and is awaiting official confirmation from Guinness World Records.
马克斯毛发呈灰色，他的动物出生证明足以证明它的年龄。目前马克斯正等待吉尼斯世界纪录的官方确认。
If your content changes often, but not on every page hit, consider setting a Cache-Control: max-age header; most users access pages again in a relatively short period of time.
如果你的内容经常改变，但是不是每次页面请求都改变，考虑设置一个Cache - Control： max -age头信息；大部分用户会在短时间内多次访问同一页面。
Note: the cache-control max-age and s-maxage will override the Expires header.
注意：cache - control max -age和s - maxage将覆盖Expires头部。
Max Greentree is categorised as a Juvenile because he is of the age of 15, however the crime has not been solely committed by him therefore his trial would not commence in the Youth Court.
麦克斯格林豪泰归类为15岁的少年，然而他的罪行尚未完全，因此青年法院审判不会开始。
Max Greentree is categorised as a Juvenile because he is of the age of 15, however the crime has not been solely committed by him therefore his trial would not commence in the Youth Court.
麦克斯格林豪泰归类为15岁的少年，然而他的罪行尚未完全，因此青年法院审判不会开始。
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