传销的英文：
pyramid selling
multi level marketing
multi-level marketing

英英解释：

A way of selling goods or services through distributors by promising to pay commissions through two or more levels of recruits, also known as network marketing or matrix marketing.

pyramid是什么意思：
n. 金字塔；角锥体
v. （使）渐增；（使）成金字塔状

You mean that pyramid scheme?
你是说那个金字塔计划？

These families at the Base of a socioeconomic pyramid.
这些是位于社会经济结构底部的家庭。

The base of a triangle,pyramid,etc
三角形的底边、角锥体的底面等.

selling是什么意思：
n. 销售
v. sell的现在分词形式

Television sells many products.
电视促进许多商品的销售。

This shop is licensed to sell tobacco.
这家商店被准许卖烟草。

This store sells pet food.
这商店出售宠物食品。

multi是什么意思：
pref. 多…的

A multi-center fragmentation is governed by steric factors
多中心断裂受到位阻因素的控制。

A multi-center fragmentation is governed by steric factors.
多中心断裂受到位阻因素的控制。

The hotel has the very latest multi in its fitness center .
饭店在健身中心配备了最新的多功能健身器。