1_What does mean 将，其，者In this sentence In English? 研究人员根据他们的相对体重变化将其分为三种类型：体重减轻者，体重增加者和体重保持者。 [将]Here it means ''把‘’ 将...分为=把...分为=divide... into... [其] pron. ~ = it（sometimes can be “these” as well) [者] ...的人 2_What does mean this sentence In English? 研究人员根据他们的相对体重变化将其分为三种类型：体重减轻者，体重增加者和体重保持者。 Researchers according to their relative weight changes divide them(the volunteers maybe) into three types: weight-loser , weight-gainer, and weight-holder. [!!! these three words are made BY ME... I think you know, right?:)] 3_What does mean this sentence? 早餐之前称一下自己的体重，为了保证可靠性，只有那些至少连续7天以上称过体重的人才会被纳入分析。 Weigh your weight before breakfast , in order to ensure the reliability, and only those who have weighed (marked their weights)at least 7 consecutive days or more will be included in the analysis. 4_What does mean this sentence In English? (对这些志愿者的) (跟踪调查) 时间 (最短）为15天，（最长）为330天。 Tracked the volunteers a minimum period of 15 days and a maximum of 330 days.

将：表示将要 will 其 : 指代词，代替前面提到过的事务或人 有点像" It " 者：在这里表示一类人 像 "old" 加上”者“变成 "the old"