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a [adjective] prism
prism 是可数名词，前面可加形容词修饰；triangular prism 是几何学中的常用术语。
A triangular prism has two triangular bases.
三棱柱有两个三角形的底面。
棱柱
先理解核心含义，再看它在真实句子里的用法。
棱柱
prism
A triangular prism has two triangular bases.
三棱柱有两个三角形的底面。
一种多面体,两端为形状和大小相同的平行多边形,其余面为平行四边形的侧面。
A polyhedron with parallel ends of the same polygonal shape and size, the other faces being parallelogram-shaped sides.
有两个全等平行底面,侧面为平行四边形的多面体
a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
一种后向反射器,通常安装在测量杆上,作为全站仪的目标,用于测量距离。
A retroreflector (“device which reflects light back to its source with minimal scattering”) which is usually attached to a surveying pole as a target for a total station which emits a light beam at the device and calculates how long it takes to be reflected back in order to measure distance.
三角形截面的玻璃或石英光学器件,用于偏折光束或使图像倒转
optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image
A triangular prism has five faces: two triangular bases and three rectangular sides.
三棱柱有五个面：两个三角形底面和三个矩形侧面。
In our geometry class, we calculated the volume of a rectangular prism by multiplying length, width, and height.
在几何课上，我们通过长、宽、高相乘计算了一个矩形棱柱的体积。
The teacher asked us to draw a prism and label its bases and lateral faces.
老师让我们画一个棱柱并标出它的底面和侧面。
prism 是可数名词，前面可加形容词修饰；triangular prism 是几何学中的常用术语。
A triangular prism has two triangular bases.
三棱柱有两个三角形的底面。
表示光穿过棱镜时，常用 pass through a prism；也可说 go through a prism。
White light splits into colors as it passes through a prism.
白光通过棱镜时会分散成彩色。
prism 的复数是 prisms；复数主语后 be 动词用 are。
These prisms are made of glass.
这些棱镜是玻璃制成的。
Not this
A triangular pyramid has two triangular bases and three rectangular lateral faces.
Use this
A triangular prism has two triangular bases and three rectangular lateral faces.
prism 是“棱柱”，有两个全等且平行的底面，侧面是平行四边形；pyramid 是“棱锥/锥体”，只有一个底面，侧面是三角形。句中描述的特征属于棱柱，因此用 prism。
Not this
The volume of triangular prism can be found by multiplying the base area by the height.
Use this
The volume of a triangular prism can be found by multiplying the base area by the height.
prism 是可数名词，单数形式前需要有冠词或限定词。a triangular prism 表示“一个三棱柱”，去掉 a 不符合英语单数可数名词的规则。
Not this
The light passed in the prism and produced a spectrum.
Use this
The light passed through the prism and produced a spectrum.
表示光从棱镜的一侧穿过到另一侧时，英语用 through（穿过），不用 in（在…里面）。in the prism 只能表示“在棱镜内部”，与“穿过”的意思不符。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
三棱柱
A triangular prism has five faces.
三棱柱有五个面。
长方体
A rectangular prism has six faces.
长方体有六个面。
棱柱的表面积
Calculate the surface area of a prism.
计算棱柱的表面积。
棱柱的底面
The base of a prism can be any polygon.
棱柱的底面可以是任意多边形。
正棱柱
In a regular prism, the bases are regular polygons.
在正棱柱中，底面是正多边形。
斜棱柱
An oblique prism has lateral edges that are not perpendicular to the bases.
斜棱柱的侧棱不垂直于底面。
透过……的视角；从……的角度
She interpreted the poem through the prism of her own childhood memories.
她以自己童年记忆的视角来解读这首诗。
《月之暗面》封面上的棱镜
The prism on the cover of The Dark Side of the Moon splits white light into a rainbow.
《月之暗面》封面上的棱镜将白光分散成彩虹。
Use prism naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：三棱镜把白光散成彩虹，形状像三角尺；prism 中的 ris 像 rise，象征彩虹在棱镜中升起。
语域：neutral 常见场景：geometry textbook、math class、technical descriptions 该义项（棱柱）为数学术语，通常出现在教材、几何题和正式说明中，语气中性偏正式；日常口语中不太常用，多用于书面或课堂教学。
prism /ˈprɪzəm/ 与 schism /ˈskɪzəm/ 押韵：都以 /zəm/ 结尾。形近词 prison /ˈprɪzən/、prissy /ˈprɪsi/、prize /praɪz/ 尽管开头拼写相似，但结尾或元音不同，并不押韵。注意 -ism 在 prism 中读 /ɪzəm/，不是 /ɪsm/。
Dictionary facts from ECDICT, WIKTIONARY.