ちからをつけ
Meanings
Expression
Verb (1-dan)
1. to build up one's strength; to get stronger
2. to give (someone) strength; to cheer (someone) up; to encourage (someone)
Composed of
force; strength; capability; ability; efficacy; effect; effort
to attach; to join; to furnish (a house with); to wear; to put on; to keep a diary; to make an entry
Examples (2 in total)
She is making progress with her English.
First you have to build up your vocabulary.