参与者把自己的电话使用频率平均低估了20%，将通话时长平均高估了40%。对统计学家更不利的是，时间越久记忆错误越多。

Participants underestimated the number of calls they had made by an average of about 20%, and overestimated call.

youdao

根据应用语言学中心的统计，2008年，美国为学生提供外语教学(包括普通话)的中学只占4%。

According to the Center for Applied Linguistics, in 2008 only 4 percent of middle and high schools that offer foreign-language instruction included Mandarin.

youdao

个人统计——可以了解使用Tawkon后，最后一次(日、周，月，半年)通话中避免了多少辐射。

Personal Stats - Find out how much radiation you avoided by using Tawkon during the last call, day, week, month and six months.

youdao