2. eschew   verb   

原句: An unassuming, modest man so beaten up by his superhuman abilities that he eschews them almost entirely.

意思: to deliberately avoid or keep away from sth

字源: late Middle English: from Old French eschiver, ultimately of Germanic origin and related to German scheuen ‘shun’, also to shy. 

例句: He had eschewed politics in favour of a life practising law.

3. affliction   noun [uncountable/countable]   

原句: You get the feeling that he's a common man with an uncommon affliction.

意思: pain and suffering or sth that causes it

字源: Middle English (originally in the sense ‘infliction of pain or humiliation’, specifically ‘religious self-mortification’): via Old French from Latin afflictio(n-), from the verb affligere, from ad- ‘to’ + fligere ‘to strike, dash’. 

例句: Deafness is a terrible affliction.

4. sanitation   noun [uncountable]   

原句: A non-partisan organization that provides safe drinking water and sanitation to people in developing countries.

意思: the equipment and systems that keep places clean, especially by removing human waste

字源: mid 19th cent.: formed irregularly from sanitary. 

例句: A lack of clean water and sanitation were the main problems.

5. analytical   adjectives   

原句: You could have an analytical conversation about a piece of material.

意思: using a logical method of thinking about sth in order to understand it, especially by looking at all the parts separately 

例句: She has a clear analytical mind.