"Phrase learning" can be referred to as "phraseology study" in Engpsh. The word "phraseology" comes from the Greek word "phrasis" meaning "manner of speaking".
Phraseology is the study of fixed expressions or idiomatic expressions in a language. It examines the meaning, use, and origin of common phrases and idioms used in everyday language.
Example:
"Bite the bullet" - to face a difficult situation bravely and without hesitation
"Cost an arm and a leg" - to be very expensive
"A piece of cake" - to be very easy
Translation:
"勇敢面对困难"
"非常昂贵"
"非常简单"