?
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。

steam engine
小学

美 / stiːm ˈendʒɪn /
na. 蒸汽机

复数:steam engines

1. Who invented the steam engine?
谁发明了蒸汽机?
2. In 1941, the train would have been pulled by a steam engine.
1941年,火车可能已由蒸汽机车来牵引了。
3. This was to occur with progress in the development of the steam engine.
这是随着蒸汽机的发展进步而发生的。
4. The coal-fired steam engine was taking over, and the waterwheel was fast becoming obsolete.
烧煤的蒸汽机开始占领市场,于是水车很快就过时了。
5. He thereby transformed an inefficient pump of limited use into a steam engine of a thousand uses.
因此,他将应用范围有限且效率低的蒸汽泵改造成了应用范围广泛的蒸汽发动机。