Chaotic: in a state of complete confusion and disorder 混乱的;杂乱的;紊乱的
The traffic in the city is chaotic in the rush hour.
在上下班高峰时间,城市的交通混乱不堪.
sentiment: feelings of pity, romantic love, sadness, etc. which may be too strong or not appropriate (失之过度或不恰当的)伤感,柔情,哀伤
There was no fatherly affection, no display of sentiment.
没有像父爱般的亲昵,没有显得过于激动.
There is no room for sentiment in business.
在生意场上心肠不能软.
Hazard: a thing that can be dangerous or cause damage 危险;危害
a fire/safety hazard
火灾╱安全隐患
Growing levels of pollution represent a serious health hazard to the local population.
日益严重的污染对当地人民的健康构成了重大威胁.
Everybody is aware of the hazards of smoking.
大家都明白吸烟的祸害.
hazard lights(= flashing lights on a car that warn other drivers of possible danger)
（汽车上的）危险示警灯
