zhè / bǐ / chāi / lǚ / fèi / xiān / yóu / gōng / sī / diàn / zhī / yuè / dǐ / zài / tǒng / yī / bào / xiāo

这笔差旅费先由公司垫支，月底再统一报销。

The company will advance this business travel expense, and it will be reimbursed at the end of the month.