Part 1 字首 表示{数字}的字首 tri- = three 三
入门字
triple (n.) 三倍 (v.)（使）三倍于 (a.) 三重的
tri/ ple
three/ fold
进阶字
1. tricolor (a.) 三色的
tri/ color
three/ color
Many nations have tricolor national flags.
许多国家都用三色国旗。
2. trident (n.) 三叉戟
tri/ dent
three/ tooth
In Roman mythology, Neptune the sea god uses a trident as a weapon.
罗马神话中的海神用三叉戟当武器。
3. Trinity (n.) 三位一体
trin/ ity
three/ 名词字尾
The Trinity means the Father, the Son, and the Holy Ghost.
三位一体指的是圣父、圣子、圣灵。
4. triplet (n.) 三胞胎
tri/ ple/ t
three/ fold/ 名词字尾
Triplets occur much less frequently than twins.
三胞胎比双胞胎少多了。
5. tripod (n.) 鼎，三脚架
tri/ pod
three/ foot
You can take sharper pictures with a tripod.
用三脚架，照片可以照得更清楚。