1.   An intricate machine that requires some training to use it properly.

2.   Abiomed engineers took three decades to fine-tune the intricate machine, waiting patiently as computer and engineering technology developed to meet their needs.

3.   So the television reporter has spent hours, sometimes days, gently polishing and rebuilding the intricate machines.

4.   That would mean understanding not only natural phenomena like weather but also the increasingly intricate machines people build.

5.   Today a VCR is an intricate machine, set up for complex functions that most of us will never use.