an agent that causes a precipitate to form沈殿を起こす物質沈殿剤
done with very great haste and without due deliberation; "hasty marriage seldom proveth well"- Shakespeare; "hasty makeshifts take the place of planning"- Arthur Geddes; "rejected what was regarded as an overhasty plan for reconversion"; "wondered whether they had been rather precipitate in deposing the king"非常に迅速に、十分な熟考なしでされる拙速