?
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。

upgraded
高中

美 / ˈʌpɡreɪdɪd; ʌpˈɡreɪdɪd /
adj. 提升的,升级的
v. (使)升级;提高(飞机乘客、旅馆住客的)待遇;提高……的档次;提拔(upgrade 的过去式及过去分词)

1. Helicopters have been upgraded and modernized.
直升机已经升级并且装上现代化设备。
2. Medical facilities are being reorganized and upgraded.
医疗设施正在进行重组和升级。
3. The entire structure has benefited from an upgraded maintenance program that has also included restoration of some of the EEOB's most spectacular historic interiors.
整个结构得益于一个升级的维护项目,包括对 EEOB 最壮观的历史内景的修复。
4. He was upgraded to security guard.
他被提升为保安。
5. You can pay to be upgraded to a business class seat.
你可以花钱调换到商务舱的座位。