buy [sell, exchange] currency
通貨を買う［売る，交換する］
buy for a mere trifle
ニ束三文で買う
buy in bulk
大量購入する
buy in quantities [quantity]
大量購入する
buy insurance
保険に入る
buy it for [as] a present
贈り物に［として］それを買う
buy [sell] it for a song
ただ同様に買う［売る］
buy low and sell high
安く仕入れて高く売る
buy [sell] on credit
掛け買い［売り］する
buy [take] one's ticket for [to] London
ロンドンまでの切符を買う
