Oil and water do not mix.

油和水不相融。

《牛津词典》

Although there is no overt hostility, black and white students do not mix much.

虽然没有明显的敌意，但黑人学生和白人学生还是交往不多。

《柯林斯英汉双解大词典》

High heat and alcohol do not mix.

高温和酒精不能共存。

youdao

After that,if you do fertilize the bulbs, do not mix the fertilizer in the planting hole.

VOA: special.2011.04.12

Take the yolks and mix them in with the sugar and water No. Sugar and flour I guess is probably what I want, sugar and water is not going to do anything interesting for me here mix them into something else.

将蛋黄取出,把他们和上糖和水,不，我猜糖和面粉才可能是我想要的，糖和水没法儿为我,变出有趣的东西来,把他们混合成别的什么东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

And critics warn that lending and politics do not mix.

VOA: special.2009.01.30

Simply put, executive orders and large, cultural change simply do not mix.

FORBES: The Solution To Guns Must Come At The State Level-Not By Executive Order

Marketers are mislead to think that they promotionally come out ahead with incremental sales and profits in spite of lower margins because mix models do not measure the longer-term negative consequences of cannibalized, future full-margin sales.

FORBES: The Downside Of Marketing Mix Models Is There's No Upside For CMOs

Mix models simply do not measure the longer-term, positive value of advertising.

FORBES: The Downside Of Marketing Mix Models Is There's No Upside For CMOs