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endanger
vt.危害(harm)
The animals that lived in the marsh were endangered by the drought.
住在沼泽地里的动物因干旱而濒临灭绝。
harmful
adj.有害的(dangerous, detrimental)
hazard
n.危险(risk, danger)；公害
hazardous
adj.危险的(dangerous, perilous)
People hesitated whether to begin the hazardous journey to the unkown west or not.
人们犹豫是否要开始冒险去未知的西部。
impair
vt.损害(harm, damage)
His misdeeds greatly impaired our friendship.
他的劣迹严重伤害了我们的友谊。
jeopardy
n.危险(danger，risk)
maim
vt.使残废(disable, mutilate)；损伤
He was seriously maimed in a car accident.
他在一次车祸中严重致残。
peril
n.危机；危险的事物
perilous
adj.危险的(dangerous,hazardous)
threaten
vt.威胁(menace, terrify)
They threaten to kill all the people without receiving the ransom.
他们威胁要是没有收到赎金，就杀死所有人。
crisis
n.(疾病的)转折点，决定性时刻(turning point);危机 (emergency)
The 1997 Asian financial crisis had a negative impact on the economies in many Asian countries and worldwide at large.
1997年的亚洲金融危机对许多亚洲国家和世界各地的经济产生了负面影响。
grave
adj.重大的；庄严的，庄重的(serious, significant)
His face was grave as he told them about the bankcrutcy of his business.
当他告诉他们他生意上的资金问题时，脸色很严肃。
ruinous
adj.导致毀灭的(destructive);使人破产的
The attack on the enemy troop was ruinous.
对敌攻击是毁灭性的。
imperil
vt.使陷于危险，危及(endanger)
Disafforestation is imperiling the environment in many African countries.
在许多非洲国家，砍伐森林正在危及环境。
vulnerability
n.弱点
Overconfidence and credulity are his vulnerabilities.
自负和轻信是他的弱点。
prejudice
n.偏见，成见；损害，侵害 vt.使抱偏见，使存成见；伤 害，损害
