有效期：约两个月。
这个程序由该公司内部团队花了约两个月的时间来研发，在6月发布之后每周有约2000次的下载。
Developed internally in about two months and launched in June, the SPG app is being downloaded at a rate of roughly 2, 000 per week.
我使用天才宝宝胎教仪约两个月，我非常喜欢它，它用起来很容易特别有时候在外面工作也可以使用。
I have been using the Ritmo for about two months and love it. It is easy to use and awesome for working out.
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