still look as if they could have be

still look as if they could have been designed yesterday, although it has been more than half a century since they were created.

Results (Chinese) 1:

仍然看起来好像他们可以被设计的昨天，虽然它已经超过半个世纪，因为他们被创造了。

Results (Chinese) 2:

仍然看起来好像他们可能昨天已经被设计，虽然已经超过了半个世纪，因为他们创建的。

Results (Chinese) 3:

尽管他们已经设计了昨天的设计，但他们已经超过半个世纪以来，他们被创造。