a grim smile meaning in English

大无畏的微笑

A grim smile tugged one corner of the warrior ' s mouth
她的嘴角挤出一抹冷酷的微笑。
I saw a grim smile contort mr . rochester s lips , and he muttered -
我看见一阵狞笑扭曲了罗切斯特先生的嘴唇，他咕哝道：
The black avenger stood still with folded arms , " looking his last " upon the scene of his former joys and his later sufferings , and wishing " she " could see him now , abroad on the wild sea , facing peril and death with dauntless heart , going to his doom with a grim smile on his lips
黑衣侠盗交叉着双臂，站在木筏上一动不动。他在“最后再看一眼” ，那给了他欢乐又带来苦闷的地方，并希望“她”此刻能看见他在白浪滔天的大海上，直面险恶和死亡，毫无惧色，一脸冷笑，从容赴死。