?
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。

principals
高中

美 / ˈprɪnsəplz /
n. 校长;负责人(principal 的复数)

1. Sixty percent of teachers are women, but a mere five percent of women are principals.
60%的教师是女性,但只有5%的女性是校长。
2. Once supervised by teachers and principals, they now appear to be in "self care”.
他们曾经受到老师和校长的监督,现在却像是在“自我照顾”。
3. "We're worried about our teachers and principals, and we really don't want to lose them because of this," one parent said.
“我们很担心我们的老师和校长,我们真的不想因为这个失去他们。”其中一个家长说道。
4. In Frederick, students' parents are buying classroom supplies and offering to pay for groceries and utilities to keep first-year teachers and principals in their jobs.
在腓特烈,学生的父母负责购买教室用品,并主动支付杂物费用和水电费,以保住一年级的教师和校长的工作。
5. Despite the excellent work and deep commitment of our nation's teachers and principals, students in high poverty, high-minority schools are unfairly treated across our country.
尽管我们国家的教师和校长工作十分出色,且作出了深刻的承诺,但在国内贫困程度高的地区中,少数民族学校的学生还是受到了不公平的待遇。