掺入

gōng shuǐ yǐ chān rù le tǔ rǎng zhōng de huà xué wù zhì

供水已掺入了土壤中的化学物质。

The water supply had been adulterated with chemicals from the soil.

jiāng dàn dǎ hǎo hòu màn màn de chān rù miàn fěn

将蛋打好后慢慢地掺入面粉。

After you have beaten the eggs, mix in the flour gradually.