前綴 tri-

漢： 前綴tri-來(lái)源于拉丁語(yǔ)，意為“three”表示“三”，關(guān)于數(shù)字“三”的這個(gè)前綴，有的書(shū)上也把它當(dāng)作詞根來(lái)記，可以看一下從數(shù)字三開(kāi)始了解英詞匯記憶的奧秘這篇文章。tri與three之間發(fā)生元音音變，和"h"的弱化，由three變成了tri.
英：word-forming element meaning "three," from L. tres (neuter tria) or Gk. treis (neuter tria) "three" (see three).
1.tricycle
n.three-wheeled bicycle 三輪車 cycl=wheel
Tricycle were much more common than bicycles in the 1800's
在19世紀(jì)，三輪車比自行車常見(jiàn)的多

2.tripod
n.three-legged support,eg,for acamera;stool,table,etc.resisting on three legs 照相機(jī)等的三腳架；三腳桌，tri=three,pod=foot
Set the camera on a tripod so there is no shaking during exposure.
把照相機(jī)放在三腳架上，可防止曝光時(shí)相機(jī)抖動(dòng)。
3.trisect
v.divide a line,an angle etc,into three parts 三（等）分
sect=cut tri=three
We trisected the pie,one section for each of the three of us.
我們平均把餡餅分成了三分，每人一份。