But even if life on earth turned out to have a nonevolutionary origin (for instance, if aliens introduced the first cells billions of years ago), evolution since then would be robustly confirmed by countless microevolutionary and macroevolutionary studies
But even if life on earth turned out to have a nonevolutionary origin (for instance, if aliens introduced the first cells billions of years ago), evolution since then would be robustly confirmed by countless microevolutionary and macroevolutionary studies
但是，即使地球上的生命有个与演化无关的起源（例如，最早的细胞是几十亿年前外星人送到地球上来的），对于生命出现以后的历史，演化依旧会是铁案如山的解释，有无数微演化与巨演化研究产生的证据支持。