n. 残酷, 野蛮, 残酷行为【法】 残酷, 残忍, 虐待

◆记忆方法一：
词根词缀记忆法：cruelty n 残酷（cruel残酷的）,“ty”表名词，用在形容词后，把形容词变成名词

slave/slavery/cruel/cruelty/savage/kind/mercy/merciful
记忆：
1. slave [ sleiv ] n. 奴隶 Slaves should be liberated both politically and mentally.奴隶既要从政治上解放，也要从精神上解放。 格言： Do business,but be not a slave to it.要做事，但不要做事务的奴隶。
2. slavery [ 5sleivEri] n. 奴隶身分, 奴隶制度 The slavery should be abolished completely.应该彻底废除奴隶制。
3. cruel [ 5kruEl ] 音似“刻肉”，在肉体上刻划，残酷；adj. 残酷的, 悲惨的 What made a young boy with such a cruel heart?什么东西使得一个小男孩心肠如此残忍？
4. cruelty [5kru:EltI] n. 残忍, 残酷 The mercy on the devil is the cruelty to the kind.对坏人的同情就是对好人的残忍。
5. savage [ 5sAvidV ] sav-age sav-音似“杀无”,杀的一个不留，野蛮凶狠 adj. 野蛮的, 凶猛的, 残忍的 Be careful of the savage in the area.当心这一带的野人。
6. kind [ kaind] adj. 善良的 The kind shouldn’t be regard as the weak.善良不应被看作是软弱。 be kind to sb It’s kind of sb to do sth
7. mercy [ 5mE:si ] mer-cy联想：妹儿是有同情心的， n. 仁慈, 宽恕, 怜悯 Have mercy on others and you will get more in the future.对别人有同情心，你将得到更多的回报。
8. merciful [ 5mE:siful ] adj. 仁慈的, 慈悲的 A merciful heart is to be treasured.应珍惜仁慈之心。
另类阅读：
The slavery allowed the slave owners to exploit slaves cruelly. Some kind white people had mercy on them and did what they could to free them of the cruelty.