?
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。

wakeful

英 / ˈweɪkfl /
美 / ˈweɪkfl /
adj. 失眠的;不能入睡的;没怎么睡的;不眠的

1. He lay wakeful all night.
他躺在床上彻夜未眠。
2. She had spent many wakeful nights worrying about him.
她度过了许多不眠之夜,为他担心。
3. He himself was feeling quite wakeful and even lively, though he didn't know why.
他自己觉得很清醒,甚至充满活力,虽然他不知道为什么。
4. The eye controlled by the sleeping hemisphere keeps shut, while the wakeful hemisphere's eye stays open and alert.
由睡眠大脑半球控制的眼睛保持关闭,而清醒大脑半球的眼睛保持睁开和警觉。
5. Several times lately, I have lain wakeful when there sounded the first note of the earliest lark, which makes me almost glad of my restless nights.
最近有几次,当最早的云雀发出第一声鸣叫时,我躺在床上睡不着觉,这使我几乎为自己的多少个不眠之夜感到欣然。