Balsamic vinegar is aged until it becomes dark and mellow, with a sweet-sour flavor.

陈酿的香醋至颜色黑暗，味道醇厚酸甜。

youdao

Rogers found that a chick's lateralisation depends on whether it is exposed to light before hatching from its egg—if it is kept in the dark during this period, neither hemisphere becomes dominant.

罗杰斯发现，小鸡的偏侧性取决于它在孵出蛋之前是否暴露在阳光下——如果在这段时间里保持黑暗，右脑或左脑都不会占优势。

youdao

The behavior of a galaxy's dark matter halo could affect its evolution and help determine whether it becomes a spiral or an elliptical, they added.

科学家们补充说，星系的暗物质晕可能会影响到星系自身的演化过程并决定星系的形态——椭圆状或者是涡旋状。

youdao

Then it becomes dark, dangerous and decidedly evil.

VOA: special.2009.06.12

Then peek at the center of the flakes: Unlike the exterior of the meat, which becomes milky and opaque as it cooks, the interior should remain dark pink.

WSJ: Renee Erickson's Roast Salmon With Saut��ed Radishes and Sorrel Cream

You take dark chocolate, you mix it with white milk, and it becomes a delicious drink.

CNN: Nagin apologizes for 'chocolate' city comments