Tā / bù / yuàn / yì / bǎ / tóng / shì / dàng / chéng / zì / jǐ / shēng / zhí / de / diàn / jiǎo / shí

她不愿意把同事当成自己升职的垫脚石。

She was unwilling to use her colleagues as stepping stones for her promotion.