重點講解：
1. set out to do sth. 開始；著手；
He has achieved what he set out to do three years ago.
他已經實現了他3年前的奮斗目標QI^9pmd0&c~rv,D=oo。
2. be exposed to do sth. 使暴露于（險境）；使遭受（危險或不快）；
This part of the west coast of Scotland is very exposed to Atlantic winds.
蘇格蘭西海岸的這一段完全暴露在大西洋海風前k^G|+_Y-!ejI^@t。
3. care about 關心；在乎；在意；
They were tuned in to their own needs and didn't care about the feelings of other people.
他們只顧自己的需求，不在乎別人的感受8P7gCi;%O|nKkL5EwLBq。
4. react to （作出）反應；回應；
Someone allergic to milk is likely to react to cheese.
對牛奶過敏的人可能對奶酪也有不良反應fkkuD#fmc0u@fKl。