Whisk the egg whites until they are foamy but not stiff.

挥打蛋清起沫但不变硬。

《柯林斯英汉双解大词典》

The jelly is not stiff enough.

这冻儿不够稠。

youdao

Ideal posture is to sit straight, but not stiff, against the back of the chair.

理想的姿势是背靠椅子坐直，但不要僵硬。

youdao

Let me rephrase it into garbled English that'll lead more naturally into what I want to do While the egg whites are not stiff, beat them.

让我用篡改的英语,重新说一遍，我要做的吧,当蛋清还不够浓稠的时候，搅拌它们。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I try to imagine, well, first, imagine being really, really stiff, because you're not flexible when you're a ball point pen.

让我试着想象，首先，想象自己变得非常僵硬，因为圆珠笔是不会动的。

耶鲁公开课 - 死亡课程节选

If you are Catholic, I would ask, no beg, that you not stiff the altar boys on their tip.

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Technology developed at MIT's Leg Lab, where Dilworth works, allows researchers to make robots with springy joints, not stiff ones.

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Beat them to soft, not stiff peaks.

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