要不是办像酿酒厂或保险公司这样的副业，他们没有多少人只靠艺术就能过的舒舒服服。 Few of them managed to make a good living out of their art alone, without running a sideline such as a brewery or an insurance office.
他在干一个有收益的副业－－－－向游客出售明信片。 He runs a profitable sideline selling postcard to tourist.
