rat

/ræt/ n.
标准词条 CET-4
一句话记住

老鼠；大鼠

释义与例句

n. 老鼠；大鼠
a small furry rodent with a long, thin tail, often larger than a mouse and sometimes living near human buildings
  1. A rat darted under the shed when we switched on the light.
    我们一开灯，一只老鼠就飞快地钻到了棚屋下面。
  2. The old warehouse had been empty for years and was full of rats.
    那座旧仓库闲置多年，里面到处都是老鼠。
展开其余 1 条例句
  1. The researchers kept each laboratory rat in a separate clean cage.
    研究人员把每只实验大鼠分别饲养在干净的笼子里。

词源与构词

记忆钩子 rat 和 mouse 都可指鼠，但 rat 通常体型较大；记住 mouse 的复数是 mice，而 rat 直接加 -s。

词族与关联词

易混词（形近或义近，注意区别）
  • mouse 小鼠；老鼠
    rat 通常指体型较大的鼠，尾巴长而有鳞；mouse 通常指体型较小的鼠。两者复数形式也不同：rat 变为 rats，而 mouse 是不规则复数 mice。
    A tiny mouse had built a nest behind the kitchen cupboard. 一只小老鼠在厨房橱柜后面筑了个窝。
常见搭配
  • rat poison 老鼠药；灭鼠药
    Rat poison must be stored where children and pets cannot reach it. 老鼠药必须存放在儿童和宠物接触不到的地方。
  • catch rats 捕鼠
    The farm cats were good at catching rats around the grain store. 农场里的猫很擅长在粮仓周围捕鼠。
  • a laboratory rat 实验大鼠
    The scientists monitored the laboratory rat's behaviour after changing its diet. 科学家们在改变饮食后监测了这只实验大鼠的行为。