zhī / bù / qián / gōng / rén / yào / gěi / shā / xiàn / jìn / xíng / shàng / jiāng / yǐ / zēng / jiā / qiáng / dù

织布前，工人要给纱线进行上浆，以增加强度。

Before weaving, workers size the yarn to increase its strength.