grooved

音标发音

Scientists showed how balls placed in grooved wooden tracks would have allowed the easy movement of stones weighing many tons.
科学家们展示了如何将球放在木质的轨道槽内，然后将重达数吨的石头轻易移动起来。
The hairs themselves were strangely shaped: the cross-sections were triangular, grooved, or shaped like kidneys instead of circular.
头发自己会形成古怪的形状：截面变为三角形、带有凹槽或者腰果状，而不是圆形。
The machine looks like a giant, thick, grooved vinyl record spinning at high speed to capture nearly 90 percent of the oil on the waters.
这个机器像个高速旋转中开槽的黑胶唱片，别看它又大又厚，却能清除水面上90%的油，运作时还不会漏油。

The Mojo Refuel comes with 2 high capacity i9300 2200mAh lithium-ion batteries and 2 grooved silver and red colored bumpers.
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Below that barrel is the same grooved extension, shaped the same as all the older models to enable compatibility with old mounts.
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