?
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。

tumble
CET6

英 / ˈtʌmb(ə)l /
美 / ˈtʌmb(ə)l /
v. 跌倒;摔倒;倒塌;绊倒
n. 混乱;摔倒;跌跤;骤降

复数:tumbles;第三人称单数:tumbles;现在分词:tumbling;过去式:tumbled;过去分词:tumbled

1. Babies tumble when they are learning to walk.
幼儿在学走路时常常跌倒。
2. Insects that land on the rim of the pitcher slide on the liquid and tumble in.
落在水罐边缘的昆虫在液体上滑行,并在里面打滚。
3. She mostly took a tumble—but it's no surprise her first instinct was to protect her husband.
她差点摔倒——但不难理解,她本能的第一反应就是保护自己的丈夫。
4. The children seemed to tumble about and amuse themselves like a litter of rough, good-natured collie puppies.
孩子们好像在打滚,像一窝乱蓬蓬、脾气好的柯利牧羊犬幼犬一样自娱自乐。
5. Everything is loose in the house, and poor grandmother told me she was afraid that the house might tumble down.
房子里所有地方都松动了,可怜的奶奶告诉我她担心房子会倒塌。