mā / ma / gěi / hái / zi / huàn / shàng / gān / jìng / de / dōu / dou / yǐ / miǎn / yī / fu / bèi / nòng / zāng

妈妈给孩子换上干净的兜兜，以免衣服被弄脏。

The mother put a clean bib on the child to keep the clothes from getting dirty.