makes a big difference to使…出现差别
imagine想象
have these difficulties有这些困难
normal things普通事物
trained dog受过训练的狗
after six months of training六个月训练后
your kindness你的善良
give him orders给他命令
at once立刻
changing my life改变我的生活
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本回答被提问者采纳随后三个:大不同、想象、一些困难;