代入 dàirù substitute Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 这道数学题涉及两个元，需要通过代入法来求得结果。 zhè dào shùxué tí shèjí liǎng gè yuán, xūyào tōngguò dàirù fǎ lái qiúdé jiéguǒ. This math problem involves two variables and requires the substitution method to find the result. Source: Dong Chinese Dictionary