2. cite   verb   

原句: The students were citing differences between Chinese and South Korea culture.

意思: to mention sth as a reason or an example, or in order to support what you are saying

字源: late Middle English (in sense 3, originally with reference to a court of ecclesiastical law): from Old French citer, from Latin citare, from ciere, cire ‘to call’. 

例句: He cited his heavy workload as the reason for his breakdown.

3. terrain   noun [countable/uncountable]   

原句: He's a cross-cultural interpreter whose terrain is the delicate.

意思: used to refer to an area of land when you are mentioning its natural features, for example, if it is rough, flat, etc.

字源: early 18th cent. (denoting part of the training ground in a riding school): from French, from a popular Latin variant of Latin terrenum, neuter of terrenus from terra ‘earth’. 

例句: They walked for miles across steep and inhospitable terrain.

4. query   verb   

原句: The 59-year-old educator has queried people at airports.

意思: to express doubt about whether sth is correct or not

字源: mid 17th cent.: anglicized form of the Latin imperative quaere!, used in the 16th cent. in English as a verb in the sense ‘inquire’ and as a noun meaning ‘query’, from Latin quaerere ‘ask, seek’. 

例句: We queried the bill as it seemed far too high.

5. faux pas   noun   

原句: About cultural faux pas committed by visiting foreigners.

意思: an action or a remark that causes embarrassment because it is not socially correct

字源: French, literally false step. 

例句: I committed a faux pas that my friends have never let me forget.