I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业,所以今晚我只能花一小时看电视。
Travellers on short trips to areas with water supplies of uncertain quality should avoid drinking tapwater, or untreated water from any other source.
短途旅行到水质不保险的地区时,应避免饮用水龙头的水或未经处理任何其他来源的水。