例句與造句

1. If extraterrestrial life exists, it may be vulnerable to interplanetary contamination by foreign micro-organisms.
2. They argue that an anthropocentrically driven approach could lead to the extinction of indigenous extraterrestrial life, or the Interplanetary contamination.
3. Davidson then discovers a bacterium in the corpse he has never seen before, prompting him to speculate that the bacterium is the result of interplanetary contamination.
4. There are two types of interplanetary contamination . "'Forward contamination "'is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.
5. It's difficult to find interplanetary contamination in a sentence. 用interplanetary contamination造句挺難的