Terms containing by trial and error

Subject	English	Chinese
gen.	by trial and error	用试试改改的办法
gen.	by trial and error	用试凑法
scient.	Many drugs were found by trial and error.	许多药物是通过反复试验后找到的。
scient.	Their plan evolved by trial and error.	他们的计划通过不断摸索而得到发展。