Refer to sth (phrasal verb)

●To pertain to something or someone; concern something or someone.（適用於，指的是）

Examples:　　

1.I have a question referring to yesterday's lecture.　　

2.The new salary scale only refers to company managers and directors.

Lift sth up (phrasal verb)

●To make something more interesting or enjoyable; to improve the situation that someone or something is in.（提升，提高）

Examples:　　

1.Nothing - not even the prospect of dinner - could lift up his spirits.　　

2.The article is informative enough, but it's a little dull - we need something to lift it up.

Be no stranger to sth (idiom)

●Thoroughly experienced in or knowledgeable about something.（對…不陌生）

Examples:　　

1.Don't worry, I'm no stranger to spicy food.　　

2.He is no stranger to hard work.

Commit oneself to sth (idiom)

●To promise to support and assist something.

　　（獻身於，致力於）

Examples:　　

1.I can't commit myself to your cause at the present time. Maybe next month when I am less busy.　　

2.She committed herself to being there on time.

Be/get bogged down (phrasal verb)

●To be/become stuck; prevented from making progress. （陷入泥淖，陷入困境）

Examples:　　

1.Let's not get bogged down with individual complaints.　　

2.Try not to get too bogged down in the details.