胚种

The confirmation of Mars-Earth panspermia would suggest that life, once started, could readily spread within a star system.

「火星–地球」胚说如获证实，表示命一旦出现，便能轻易在星系内扩散。

For this reason, the most commonly discussed panspermia scenario involves the transport of microbes or their precursors from Mars to Earth.

基于这个理由，最常论的胚说就是：或其前驱，是从火星送到地球的。