Tra từ hence - Từ điển Oxford Advanced Learner 8th

hence AW BrE [hens] NAmE [hens] adverb (formal)
for this reason
• We suspect they are trying to hide something, hence the need for an independent inquiry.
Idiom: … days/weeks hence

Word Origin:
[hence] Middle English hennes (originally meaning ‘from here’): from earlier henne (from Old English heonan, of Germanic origin, related to ↑he) + -s (later respelled -ce to denote the unvoiced sound).

Language Bank:
therefore
Ways of saying ‘For this reason…’
▪ Today's children eat more junk food and get less exercise than previous generations of children. It is not surprising, therefore ▪, that rates of childhood obesity are on the increase.
▪ Children who grow up on a diet of junk food find it difficult to change this habit later in life. It is essential, therefore ▪, that parents encourage healthy eating from an early age.
▪ Children who grow up on a diet of junk food find it difficult to change this habit later in life. For this reason ▪, / This is why ▪ it is essential that children eat healthily from an early age.
▪ Eating habits formed in childhood tend to continue into adult life. Thus ▪, the best way to prevent heart disease among adults is to encourage healthy eating from an early age.
▪ Eating habits formed in childhood tend to continue into adult life, hence ▪ the importance of encouraging healthy eating from an early age.
Language Banks at ↑because of, ↑cause, ↑consequently, ↑emphasis, ↑vital