n.鞣皮工，硝皮匠，制革工人
adj.棕褐色的，棕黄色的
tan的比较级

原形：tan第三人称单数：tans复数：tans比较级：tanner最高级：tannest过去式：tanned过去分词：tanned现在分词：tanning

He got a tan after this summer.
今年夏天他被晒黑了。
My father always wears his a tan leather jacket.
我父亲总是穿一件棕褐色的皮夹克。
I like your tan skin.
我喜欢你那种皮肤黝黑的皮肤。
The angle of the roof is quite steep, almost at a tangent to the sky.
（屋顶的角度非常陡峭，几乎与天空成切线。）
In mathematics, tan(x) is the ratio of the sine to the cosine of x.
（在数学中，tan(x)是正弦和余弦的比值。）
The tangent function is often used in trigonometry problems.
（正切函数常用于解决三角学问题。）
The tangent of 45 degrees is equal to 1.
（45度角的正切值等于1。）
The slope of the curve at this point can be found using the derivative, which is equivalent to the tangent at that point.
（曲线在这一点的斜率可以通过导数找到，这等同于该点的切线。）
The tangent line to a circle is perpendicular to the radius at the point of contact.
（圆的切线在接触点处与半径垂直。）
The pilot had to adjust the plane's altitude to maintain a tangent course with the runway.
（飞行员必须调整飞机的高度以保持与跑道的切线航线。）
The tangent of an obtuse angle lies between -1 and 1.
（钝角的正切值介于-1和1之间。）
In physics, the tangent of an angle in a force vector gives the direction of the friction.
（在物理学中，力向量中的角度的正切给出了摩擦力的方向。）
The tangent of an acute angle is always positive.
（锐角的正切值总是正的。）