【Conjunction】after; on the basis of; upon

rice paddy / cultivated field

neither is great; both are not so good

toss, throw

stem or continuative form of 打ち込む (buchikomu) [godan]

(informal) Alternative form of どちら

the above / the top (position or direction) / the surface of / superior in skill, age, level, etc.

in addition; furthermore / on top of (which)

(Internet slang) comments based on neither being great

Contraction of わからない (wakaranai), the informal present negative form of わかる (wakaru).