大批

large quantities of

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

to ascertain / to act on / to criticize / to pass on / classifier for batches, lots, military flights / tier (for the ranking of universities and colleges)