Japan currently has three information-gathering satellites in orbit and the latest satellite will replace one of them which has passed its use-by date.

目前，日本有三颗信息采集卫星在轨道运行，这颗最新的卫星将替代其中已经过期的一颗。

Some are annoyed by the fact that Reflector has an update mechanism making the product impossible to use after an expiration date, so they will either buy v.7 or stop using it altogether.

有些人很气愤，因为Reflector有一种更新机制，使得它在有效期满之后就不能使用了，所以他们只能购买v . 7，或者就不能使用它了。

If not, by all means continue to use Calendar to do all of your date calculations.

如果不是这样的话，那么继续痛苦地使用Calendar完成所有日期计算吧。

It also implements the Comparable interface so you can use it for sorting (by date).

它还实现了Comparable接口，因此您可以使用它进行排序(按日期)。

To get the VALIDITYBEGIN date needed by this BAPI, it would just use today's date.

要得到这个BAPI需要的VALIDITYBEGIN日期，使用今天的日期就可以了。