With concern on the one hand and fear on the other , I opened the door slowly.
Concern名词：关心顾虑，公司企业。动词：涉及，使关心，参与。

better off比较富裕，状况好转
He is much better off than before.

confused迷惑的 confusion迷惑
projector投影仪
puzzled困惑的茫然的 puzzle使迷惑不解
infer及物：推断暗示意指。不及物：做出推论
rent租借
turn into变成（有转折意味）
require需要要求
be typical of是……的特征
to say the least至少可以这样说；退一步讲
discharge退伍
therefore因此所以
swap交换（过去时p双写）
banknote纸币
path小路路程人生道路

Better a fool as a teacher than a fool as a king.

How dare you to disturb me?

百度这种支离破碎的英文发音刚好能恰到好处地唤醒我沉睡的记忆

手动滑稽

suburban城郊的
urban城市的