lethal
/ˈli:θl; `liθəl/ adj
1 causing or able to cause death 致死的; 能致命的
a lethal dose of poison 毒药的致命剂量
lethal weapons 致命武器.
2 damaging; harmful 破坏性的; 有害的
(fig 比喻) The closure of the factory dealt a lethal blow to the town. 那座工厂关闭是对该镇的致命打击.
(joc 谑) This wine's pretty lethal! ie very strong. 这酒的劲儿真要命!