重點講解：
1. shy away from (因害怕或信心不足而)回避，躲避，避免做；
We frequently shy away from making decisions.
我們常常害怕作出決定BxhhFYDy)igO00+yu。
2. back away from 放棄；退出；
He refused to back away from his position.
他拒絕放棄自己的立場[O;GVhHLfk]-=s。
3. on the contrary 相反地；
It's no trouble at all; on the contrary, it will be a great pleasure to help you.
根本不費事，恰恰相反，非常榮幸能幫到你dK*]4m~lDuvMo。
4. agree on 商定；議定；就…達成協議；
The truth is, even scientists can't agree on why we need to sleep.
事實是，即使是科學家們也不能對我們需要睡覺的原因達成一致|UULRhm)Z(6.Z1=9t9。