?
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。

ward off
四级

v. 挡开;架开

第三人称单数:wards off现在分词:warding off过去式:warded off

1. He brought his arm up in a futile attempt to ward off the blow.
他出于挡住这一击的无谓企图抬起了他的胳膊。
2. Many people swear by vitamin C's ability to ward off colds.
很多人深信维生素C能预防感冒。
3. She may have put up a fight to try to ward off her assailant.
她可能进行过一场搏斗,试图击退袭击者。
4. Some people think taking vitamin C can ward off colds.
有些人认为服用维生素C可以预防感冒。
5. They were used as medicines to ward off diseases, and mixed into perfumes, incent.
它们被用作药物来抵御疾病,被混合在香水和起味剂中。