基础体温介绍何谓基础体温(Basal Body Temperature, BBT):清晨刚睡醒,体温尚未因运动饮食或心情影响所测出的体温.基础体温的原理女性月经L期以月经见红第一天为L期的开始,L期的长短因人而异,约为21-35天不等,平均约为28天,其中又以排卵日为分隔,分为排卵前的滤泡期,与排卵 …
ABC phonics: phonics for kids is an interactive educational app that teaches phonics sounds via multiple activities such as phonics games and word mac …
It’s a free tool for English learners. Let’s start to learn English with VOA Special English. These lessons have slow reading speed. It is very good t …
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