?
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。

warm air

n. 暖气

1. Flags and bunting hung limply in the still, warm air.
旗子和飘带在静止、温暖的空中无力地垂着。
2. With the arrival of warm and pleasant weather, flowers are blooming in the warm air.
随着温暖宜人天气的到来,鲜花在温暖的空气中盛开。
3. Without those masses of cooling sea ice, warm air brought to the Arctic can penetrate further inland than it ever did before.
如果没有这些大量冷却的海冰,被带到北极的暖空气可以比以前更深入渗透到内陆。
4. Suddenly, there appeared a hole in their nest. The cold wind blew in through the hole and got away the warm air from the nest.
突然,他们的巢里出现了一个洞。冷风从洞里吹进来,把巢里的暖空气吹走了。
5. Birds use warm air currents to help their flight.
鸟利用暖气流助飞。