They are

就是───namely;她们───they

These design namely direct this genera problem whereas constructive one safety controls to.───本设计就是针对此类问题而设计的一个安全控制器.

Namely, the higher the learners language anxiety, lower the learners school achievement.───也就是:学生的焦虑越高, 学业成绩越低.

To be a namely piper it is necessary to study for 7 years.───要做个著名的笛手,需要学习七年.

And once lottery of traditional paper quality is missing namely come to naught.───而传统纸质彩票一旦丢失即化为乌有.

Generally, a lantern riddle consists of three parts, namely the riddle, the hint and the answer.───灯谜一般由三部分组成，即谜面、谜目和谜底。

The railroad connects two cities, namely, New York and Chicago.───这条铁路连接两个城市, 即纽约与芝加哥.

What about the other tool for boosting domestic spending, namely monetary policy?───那么,另一个刺激国内消费的工具——货币政策——又 如何 呢?

Best to be being achieved formerly support makes a whole commercial pattern namely.───对原创最好的支持就是打造一个完整的商业模式.

He could not do anything more than what he promised — namely, to look after Charlotte's estate.