Water surges from the cells on the inside of the leaf to those on the outside, causing the leaf to rapidly flip in shape from convex to concave, like a soft contact lens.

水从叶子内部的细胞涌向外面的细胞，导致叶子迅速地从凸向凹翻转，就像一片柔软的隐形眼镜。

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(Injecting water back returns the detector to a flat surface.) Injecting water into the chamber of the lens makes the thin membrane become a convex hemisphere.

(给舱室注射水使检测器表面回复平坦)注射水进入透镜舱室使得薄膜变成凹半球。

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This blade has a gentle, sloping convex curve to the point versus the concave curve of the clip blade.

相对于回形刀刃的凹曲线而言，这种刀刃具有一条延伸到刀尖的、温和的凸斜率曲线。

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The potentially iconic clear plastic at the base of the unit, the convex back, and the packed feeling of that handset has been lost to a more masculine beast of a phone.

FORBES: Sony's Xperia T Is A Muscular Monster Of A Smartphone