?
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。

free-falls

英 / ˈfriː fɔːl /
美 / ˈfriː fɔːl /
n. 自由落体;自由投放;自由下降

1. A girl free-falls into a river in Puerto Rico's Caribbean National Forest.
一个女孩子自由降落一条河中,位于波多黎各的加勒比海国家的森林地区。
2. He said the market could fall again, though he did not expect as many "sharp free falls." Usually the stock market starts trending higher before the economy recovers.
市场也许会再次萧条下去,但他并不认为会出现“急速的自由落体运动”,股市通常也会在经济恢复之前开始趋向上扬。
3. Worrying the area could face the same fate as Niagara Falls, he concluded the site should “be as free as the air or Water.”[22]
由于担心黄石地区可能面临和尼日加拉大瀑布同样的命运,海登下结论说,这个地方应该“像空气或水一样自由。”
4. When we write unit tests we should strive for code that is free of side effects, and IO certainly falls under this category.
当我们编写单元测试时,我们应该尽量编写没有副作用的代码,IO当然也属于这一类。
5. If the amount of free space in a container falls below 10mb, it's considered to be below the threshold.
如果容器中空闲空间量低于10 MB,它就被视为低于阈值。