•Err on the side of (sth) (idiom) -
To act with a specified bias towards something. （過於…，偏向…）
Examples:
1.I like to err on the side of caution and always keep some money in my savings account.
2.It's better to err on the side of generosity than to appear too stingy.
•Drag sb/sth down (phrasal verb) -
To bring somebody or something to a lower social or economic level, a lower standard of behaviour, etc.（向下拖向…）
Examples:
1.Don't let them drag you down to their level.
2.His disruptions are dragging down the performance of the other students.
•On point (idiom) -
Focused on or related to the crux or essence of a particular topic.（很切題，中肯的）
Examples:
1.This legislation could not be more on point.
2.Nothing that you're saying is on point! You're just wasting time with mindless rambling.
•Keep one's mind on sth (idiom) -
To concentrate on something.（專注於…）
Examples:
1.Let's keep our mind on the job at hand.
2.The boss told us to keep our minds on the company's goal.
•The child is father of the man (proverb) -
直譯為「兒童是成人之父」，與中文諺語「三歲看八十、七歲定終身」同義。源自英國詩人威廉·華茲華斯（William Wordsworth）在1802年寫的一首詩，意思是：一個人在孩童時形成的性格會陪伴其終生。
