?
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。

defenses
CET4

vt. [军]防御;辩护(defense 的第三人称单数)
n. [军]防御(defense 的复数)

1. There are good reasons why crop plants do not use dryness defenses already.
已有充分的理由可以说明农作物为什么不使用干旱防御。
2. They have different defenses that help them survive in the wild.
它们有不同的防御措施来帮助它们在野外生存。
3. This was the first suggestion of algal defenses against grazing.
这是藻类抵御放牧的第一次迹象。
4. Angry owners have called on the Government to erect sea defenses to protect their homes.
愤怒的业主呼吁政府建立海防来保护他们的家园。
5. Perhaps we should give special attention to the conservation of such plant species since they lack key factors in their defenses against the environmental disruption caused by pesticide use.
也许我们应该特别注意保护这类植物,因为它们缺乏关键的因素来抵御由使用杀虫剂而造成的环境破坏。