- 1 billion worldwide who live with unsafe drinking water.
2019年12月四級真題（第二套）閱讀 Section A
- About a million bottles are bought every minute, not only by thirsty tourists but also by many of the 2.1 billion worldwide who live with unsafe drinking water.
2019年12月四級真題（第二套）閱讀 Section A
- It turned out that, when the mice were hungry, they ventured into the unsafe areas for food.
2018年6月四級真題（第二套）聽力 Section C
- Twelve regions were listed as unsafe on Wednesday, on Thursday, eight remained.
2019年12月四級真題（第二套）閱讀 Section B
- The US has already lost more than a third of the native languages that existed before European colonisation, and the remaining 192 are classed by UNESCO as ranging between unsafe and extinct.
出自-2016年6月聽力原文
- Workers have the legal rights to refuse certain unsafe work assignments under two federal laws: the Occupational Safety and Health Act and the National Labor Relations Act.
出自-2012年12月聽力原文
- In any unsafe situation, simply press the button and a highly-trained agent will get you the help you need.
2018年高考英語北京卷 單項填空 原文
- Warnings from the UK government against unsafe websites.
2016年高考英語上海卷 閱讀理解 閱讀C 選項