easy to understand or do; not difficult

The instructions were written in simple English. 这些说明书是用简单易懂的英语写成的。

It's simple to find our house. 我们的房子很容易找到。

I want an explanation, but keep/make it simple. 我需要解释，不过要简单些。

used to describe the one important fact, truth, etc.

We didn't go swimming for the simple reason that the water was too cold. 我们没去游泳纯粹是因为水太凉了。

without decoration; plain

I like simple food better than fancy dishes. 比起精美的菜肴，我更喜欢平常的食物。

having or made of only one or a few parts

A hammer is a simple tool. 锤子是一种简单的工具。

Simple forms of life have only one cell. 简单的生命形式只有一个细胞。

ordinary; traditional or natural rather than modern and complicated

He was just a simple fisherman. 他只是个淳朴的渔夫。

A simple person does not have a normal level of intelligence.

He was simple, but harmless. 他有点儿傻，但不会伤人。