1
tri- + noun
常见于几何术语
triangle
三角形
三；三倍的
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三；三倍的
tri-
triangle
三角形
pref. 三；三倍
A prefix meaning three, thrice, threefold; as in tricolored,；tridentate.；A prefix (also used adjectively) denoting three proportional or；combining part, or the third degree of that to the name of which it is；prefixed; as in trisulphide, trioxide, trichloride.
A triangle has three sides and three angles.
三角形有三条边和三个角。
The child rides a tricycle with three wheels.
孩子骑着一辆有三个轮子的三轮车。
We need to triple the recipe to feed nine people.
我们需要把食谱的量增加到三倍，才能喂饱九个人。
常见于几何术语
triangle
三角形
主要用于描述物体的颜色
tricolored
三色的
用于数学或几何
trisect
三等分
Not this
I bought tri apples.
Use this
I bought three apples.
“tri-”是前缀，不能独立使用表示数字“三”；应使用数词“three”。
Not this
I need a tri-room apartment.
Use this
I need a three-room apartment.
“tri-”通常用于科学或技术词汇，不用于日常表达；表示数量时应用“three”作定语。
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