according to theinvention tooth cleaning device is provided, adapted to be introduced into the mouth.

we must always keep our teeth clean.

我们必须经常保持牙齿清洁.

it will prevent the teeth from loosening.

能预防牙齿松动.

that's why most of your teeth are loose.

这也是您的牙齿松动的原因.

one of my upper teeth is loose and aching.

我的一颗上牙齿松动而且疼痛.

i have got a loose tooth.

我有一颗牙齿松动了.

cet is one of the tests to examine the english level of college students whose major is not english.

大学英语四、六级考试是检验非英语专业大学生英语水平的考试之一。

research on college english curriculum and teaching basing on the reform of college english test four and six

大学英语四、六级考试改革背景下的大学公共英语课程与教学研究

recognizing the characteristics, function and reform effect of cet entirely, need study deeply and specially.

全面认识大学英语四、六级考试的性质、功能与改革成效，需要作深入的专门研究。

a bridge between language testing and language teaching& an introduction to the official website of cet committee

语言测试与语言教学沟通的媒介&全国大学英语四、六级考试委员会工作网站简介

brief analysis of the active backwash effect on the reform of cet 4 and cet 6

浅析大学英语四、六级考试改革的积极反拨作用

by an analysis of the results of compound dictation, jan. 2001, we can conclude that the present task for our efl teaching is still to rectify the teaching objectives, adhere to the teaching syllabus and attach importance to text-books and class teaching as well.

从考生在2001年1月大学英语六级考试复合式听写试题上的表现来看，端正教学目的，贯彻教学大纲，重视教材和课堂教学仍然是当前大学英语教学的首要任务。

the research is undertaken in two steps. first step is the analysis of the latest papers used by cet 6 and tem 4 tests.

研究分为两步，第一步是对大学英语六级考试和英语专业四级考试改革后所使用的全真试题中阅读理解部分进行对比分析。

i'm also fluent in english and i have passed cet band six with a fairly high score.

我的英语很流利，而且以优异的成绩通过了大学英语六级考试。

once, on a train, the conductor asked me if i had passed the band six exam.

有一次我坐火车，列车员问我是否通过了大学英语六级考试。

the results of the analysis show that cet 6 and tem 4 reading comprehension tests are closely related.

分析结果显示大学英语六级考试与英语专业四级考试在阅读理解方面存在高度的相关。

i was stunned — genuinely caught off guard.

我感到了震惊--彻底出乎意料.

the authorities were caught off guard.

当局对此措手不及.

he was caught off guard.

他不小心被逮着了.

he won't be easily caught off guard.

他不太容易失去防备.

the police dropped a bombshell with their announcement, which left me completely stunned and caught off guard.

警方突然宣布了一个爆炸性消息，这让我完全震惊且措手不及。