Definition

Examples

• 小时候接种疫苗可以有效预防灰质炎。
  Xiǎoshíhòu jiēzhǒng yìmiáo kěyǐ yǒuxiào yùfáng huī zhì yán.
  Getting vaccinated in childhood can effectively prevent polio.
• 这种灰质炎病毒主要通过受污染的水传播。
  Zhè zhǒng huī zhì yán bìngdú zhǔyào tōngguò shòu wūrǎn de shuǐ chuánbō.
  This polio virus spreads mainly through contaminated water.
• 全球消灭灰质炎的努力取得了巨大成就。
  Quánqiú xiāomiè huī zhì yán de nǔlì qǔdé le jùdà chéngjiù.
  Global efforts to eradicate polio have achieved great success.