1. I realized sadly that I had been completely defeated by their ingenuity.
    我懊丧地感到败在了足智多谋的蚂蚁的手下。

2. If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves.
    如果我们能够在另一颗行星上找到诸如细菌的那种低等生命，那么这个发现将彻底改变我们对我们自己的看法。

3. It threatened to surround him completely, but Tazieff managed to escape just in time.
    眼看就要将他团团围住，但塔捷耶夫还是设法及时逃离了。

4. It would be completely three dimensional, with many levels of activity.
    它将是完全立体化的，人们可以在许多层平面上从事活动。

5. It is not healthy to become completely caught up in competition and status at such a young age."
    而小小年纪就完全卷入竞争和追求地位也不利于健康。"