be in leaf
US /biː ɪn liːf/
UK /biː ɪn liːf/

1.
잎이 돋아나다, 잎이 나다
to have leaves, especially after a period of not having them (like in winter)
:
•
The trees will soon be in leaf again.
나무들은 곧 다시 잎이 돋아날 것이다.
•
By spring, all the bushes should be in leaf.
봄이 되면 모든 관목에 잎이 돋아날 것이다.