recalcitrant substance难: catastrophe; calamity; disas ...分解: resolve; decompose; disinteg ...物质: matter; substance; material质: nature; character; essence难分解物质: recalcitrant substance下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:难分解物质质，即可在微信中查询翻译
