The soy sauce containing urea will become red when heated together with diacetyldioxime and phosphoric acid.

掺有尿素的酱油在与丁二酮肟、磷酸混合后,加热煮沸会呈现红。

The underdress is dyed and BOILED chiffon to make the fabric as thin as spiderweb silk before pleating.

制作内裙的薄纱经过并被煮沸过，以使物在打褶前能象绸一样薄。

Bring the milk to boil.

把牛奶煮沸。