  In this note, we establish the estimate on the Lorentz space $L(3/2,1)$ for
vector fields in bounded domains under the assumption that the normal or the
tangential component of the vector fields on the boundary vanishing. We prove
that the $L(3/2,1)$ norm of the vector field can be controlled by the norms of
its divergence and curl in the atomic Hardy spaces and the $L^1$ norm of the
vector field itself.
