We assume that $L$ is very ample. Let $\|\raisebox{1.72218pt}{.}\|$ be a norm of $H^{0}(X,L)$ and $h$ a continuous metric of $L^{\mathrm{an}}$ given by $\big\{|\raisebox{1.72218pt}{.}|_{(H^{0}(X,L),\|\raisebox{1.20552pt}{.}\|)}^{\mathrm{quot}}(x)\big\}_{x\in X^{\mathrm{an}}}$. Let $Y$ be a closed subschme of $X$ and $l\in H^{0}(Y,\left.{L}\right|_{{Y}})$. Then, for any $\epsilon>0$, there are a positive integer $n$ and $s\in H^{0}(X,{L}^{\otimes n})$ such that $\left.{s}\right|_{{Y}}={l}^{\otimes n}$ and $\|s\|_{{h}^{\otimes n}}\leq e^{n\epsilon}(\|l\|_{Y,h})^{n}$.