1.
Having three parts;threefold.
三重的，三部分的有三个部分的，三重的
2.
Having three members, parts, or facets.
三个一组的，有三个部分的，三面的
3.
Four little, three little, two little fingers,
四个，三个，两个小手指
4.
One little, two little, three little fingers.
一个，两个，三个小手指
5.
One little,two little,three little teddy bears,
一个，两个，三个小泰迪熊，
6.
Having three focal lengths.
三焦距的有三个焦距的
7.
Containing three sodium atoms.
三钠含有三个钠原子的
8.
A group or set of three.
三个一组，三件一套
9.
involving three parties or elements.
涉及三方或者三个要素。
10.
The 3 altitudes of a triangle are concurrent.
三角形的三个高共点。
11.
Having three teeth, prongs, or similar protrusions.
三齿的具有三个齿、三个突起或三尖头的
12.
Consisting of three parts or proceeding by threes; ternary.
三个组成的由三部分组成的，三个一组的，三重的
13.
A system based on three parts or elements.
三分一个可分为三个部分或三个要素的系统
14.
A group or set of three; a triad.
三个一组三个人或物组成的小组，三个一套
15.
-Two, three months ago.
- 两三个月以前.
16.
Relating to or involving three entities, such as three people, objects, or ideas.
三方的与三方有关的或涉及三方的，如三个人、三个物体或想法
17.
Two heads are Better than one;Three cobblers with their wits combined equal Zhuge Liang the master mind l The wisdom of the ordinary people exceeds that of the wisest individual.
三个臭皮匠,顶个诸葛亮
18.
There are eighteen classes in three grades.
三个年级有十八个教室。