她说，工作太辛苦，食物太简陋，屋里没有灯，不洁净等等都是危险的，都会导致疾病。

She spoke about the dangers of working too hard, of eating poor food, of houses without light, of dirt and other causes of disease.

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如果没有救助，打开你的危险警告灯或转向灯。

If not, turn on your hazard warning lights or turn signal.

youdao

用激光灯指点飞机的危险性，我们早已知道。

We've reported before about the seriousness of pointing lasers at aircraft.

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There can be some dangers, especially at nighttime. Central Park, there's no lights.

可能会有些危险，特别是在夜间。中央公园晚上没有灯，就更加危险。

纽约生活 - SpeakingMax英语口语达人