But all this DNA has a big energetic cost that cripples even giant bacteria — stopping them from turning into more complex eukaryotes.

但是，所有这些DNA需要高能耗，大量成本甚至削弱巨大的细菌——阻止它们成为更为复杂的真核生物。

youdao

Dynamic TCIS code may investigate complex problems concerning three-elemental targets bombarded by energetic ions, such as the ion implantation at large dose, preferential sputtering, ion mixing, etc.

动态tcis可以研究离子束轰击三元靶的复杂问题：如大剂量离子注入、择优溅射和界面混合等。

youdao

She has since become an energetic player in the assembly, although, like the government, she is finding it difficult to respond to the complex challenges now confronting her country, our correspondent says.

BBC: Burma sees return of private newspapers