She was being fitted for a back brace. wǒ yǐ kāi shǐ xué xí lì yòng gù dìng de jiā bǎn yǐ xíng zǒu 我已开始学习利用固定的夹板以行走。 I has begun to learn to walk with the use of braces. 2 n.splint; clamped