锻炼身体的英文：
harden the body

参考例句：

He does exercises to develop his muscles.
他锻炼身体使肌肉发达。

I have to build up my body.
我必须锻炼身体。

It's important to exercise regularly.
有规律地锻炼身体非常重要。

If you want to stay healthy, you must exercise.
想要保持健康就得锻炼身体。

She tries to do some exercise every day and stay active.
她努力每日锻炼身体，保持活跃。

I work out regulary to keep fit.
我经常努力锻炼身体以保持健康。

Hiking is a great way to travel. You will get close to nature and take exercise at the same time.
徒步旅行是一种很棒的旅行方式，你能接触自然，与此同时还能锻炼身体。

In short, my way to hearth is rational diet, physical exercise, and regular somnus.
简而言之，我的健康之道，即营养膳食，锻炼身体和按时就寝。

harden是什么意思：
v. （使）变硬；（使）变冷酷，变严肃；（使）变坚强，变坚定；变稳定

hardened and tempered
淬火与回火的

These are the seedlings that are hardening off in a hotbed
这些是放在温床中经受耐寒锻炼的幼苗。

There they cool and harden into volcanic ash.
然后在空中它们又冷却变成火山灰。

Hardening,as of tissue,by such impregnation.
硬化组织的硬化，通过如上的钙化作用

Sand was deposited which hardened into sandstone.
沙经沉积固结形成沙岩。

body是什么意思：
n. 身体；尸体；团体；主要部分；大量
v. 赋以形体

sedan body,saloon body
四门轿车车身

to earth a body
埋葬一具尸体

Obtain an image of(a body or part of the body)with a scanner
用扫描器扫描(身体或身体的部位).

A lake is a body of water and an island is a body of land.
湖为一片水，岛为一陆地。

Body and spirit will be corrade by painfulness ?
痛苦就会侵蚀着你的身体和思想？