?
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。

at will
高中

美 / æt wɪl /
na. 任意;随意

1. The soldiers were authorized to shoot at will.
士兵得到允许可以随意开枪。
2. Fire safety facilities, please do not move at will.
战火安全设施,请勿随意搬动。
3. The beasts were more disciplined, so that it was easier for hunters to predict their habits, and capture animals at will.
这些野兽更具有纪律性,因此猎人更容易去预测它们的习性,并随意捕捉这些动物。
4. They were able to come and go at will.
他们能够来去自由。
5. If parents don't teach their child how to behave himself, he will do anything at will.
如果父母不教他们的孩子要守规矩,孩子就会随心所欲地做任何事。