?
查询技巧:
1、输入单个单词准确查询。
2、使用%模糊查询,匹配任意长度字符:
   %a    以a结尾的单词;
   ab%    以ab开头的单词;
   %ac%    含有ac的单词。
3、使用_模糊查询,匹配单个任意字符:
   _a_    三位且a在中间的单词;
   _ad    三位且ad结尾的单词;
   ac_    三位且ac开头的单词;
   _a    两位且a结尾的单词;
   a_    两位且a开头的单词。
4、带连字符-的单词,需含-字符才能模糊查询,如well-know需输入 well-% 。
5、在手机键盘上,如果g上有%和v上有_,则可长按输入。

vacancy
CET4

英 / ˈveɪkənsi /
美 / ˈveɪkənsi /
n. 空虚;空额;(职位的)空缺;空职

复数:vacancies

1. The vacancy has already been filled.
该空缺已有人接任。
2. How did the woman get to know about the job vacancy?
那个女人是怎么知道职位空缺的?
3. His resignation left a vacancy on the board of directors.
他的辞职给董事会留下了一个空缺。
4. Hotels in San Francisco are experiencing vacancy rates between 70 and 80 percent.
旧金山的酒店空置率达到了70%~80%。
5. Although Sue took longer to complete her projects than John and both were equally successful on the assignments they completed, Sue was given the first promotion when there came a vacancy.
尽管苏比约翰花了更长时间完成项目,而且两人完成的任务都很成功,但当有职位空缺时,苏得到了第一次升职。