The main driving force was, and still is, China.

Engineering, belay that order. Disengage all main drive systems.

It's strange, not doing a run-up on the main drive yet.

The main driving force putting pressure on land resources has been the growing global population.

Land. The growing global population has been the main driving force, putting pressure on land resources.

A check of my systems indicates my main drive circuit breaker... has been disabled.

A check of my systems indicates my main drive circuit breaker... has been disabled.

Their desire for change has been the main driving force of the electoral process.

Unbridled greed and social irresponsibility have thus become the main driving force of the dominant culture.

Hull damage is minimal. They probably just lost their main drive.