The diamond on her ring is actually man-made, and so almost valueless.
她戒指上的那颗钻石其实是水钻，不值什么钱。

A new man-made lake has been built in the park.
公园里新修建了一个人工湖。

The man-made central heating equipment of our home has a simple communicating vessel.
我家自己烧的土暖气上有一个简易的连通器。

As we make progress against the old diseases, the threat in the next century will be the new microbes, natural and man-made.
随着我们在对抗已有疾病方面不断取得成就，下个世纪的威胁将来自那些新型病菌，不论是天然的或是人造的。

A man-made satellite was launched.
人造卫星上天了。