学习任务2：学翻译

Burnt child dreads the fire: 一朝被蛇咬，十年怕井绳。
A bad workman always blames his tools: 不会撑船怪河弯。
A bird in the hand is worth than two in the bush: 一鸟在手胜过双鸟在林。
A bully is always a coward: 色厉内荏。
A close mouth catches no flies: 病从口入。