She had very pretty straight teeth.

她有非常漂亮整齐的牙齿。

《柯林斯英汉双解大词典》

The processing of gear hob used the meshing straight teeth and helical cylindrical gears of cutting tools.

齿轮滚刀常用的加工外啮合直齿和斜齿圆柱齿轮的刀具。

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A pair of spur gears for mounting on parallel shafts are the most common type of gears, which have straight teeth.

安装在两根平行轴上的直齿轮最常见的齿轮，这种齿轮带直齿。

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But that changed, and she said he would instead go straight to the bathroom to brush his teeth.

WSJ: Suspects' Mother Was Placed on Watch List

Snow goes straight for the throat and grabs hold with her razor-sharp teeth.

NEWYORKER: Offensive Play

As the race went on I knew as a team we were covered on all angles, so when Mo Farah came down the home straight I panned with him and got a great effect, with him showing incredible determination, gritting his teeth and really pushing for the gold medal dream.

BBC: Picture power: Running for gold