Note that there is a postfix "Z" for the DOB of the customer, which means the same time zone as Coordinated Universal Time (UTC).

请注意客户的 DOB 后有一个后缀 “Z”，这意味着与协调世界时（UTC）在同一个时区。

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Start with 180 minus your age (a) for the fat burning zone upper limit target heart rate (z).

用180减去您的年龄，得到脂肪燃烧区的上限值。

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The availability zone is chosen with -z us-east-1a, because the database server is in the same region.

使用 -z us-east-1a 可以选择可用性区域，因为数据库服务器是在同一地区。

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