同样的实验需要在人体细胞证实有效，同时效率亦须提高。

The same experiment has to be shown to work with human cells, and its efficiency has to be improved.

youdao

同时效率也包括避免受到短期和长期伤害，这也是为什么跑酷的非官方格言中提到：存在并持续。

Efficiency also involves avoiding injuries, short and long-term, part of why parkour's unofficial motto is to be and to last.

youdao

In the meantime, I believe that the U.S. is doing quite a bit of work in terms of raising fuel efficiency standards,

同时，我相信美国在提高燃料效率标准方面做了不少事，

对全球变暖的政策 - SpeakingMax英语口语达人