Bacteria are the oldest living organisms on the earth. 细菌是地球上最古老的生物。 They've been here for billions of years, and what they are are single-celled microscopic organisms. 它们已经存在数十亿年了，它们是单细胞微生物。 So they
Cassini just a few months ago also flew through the plume, and it measured silicate particles. 卡西尼太空船几个月前又从这些飞溅的水流中穿过，它检测到了硅酸盐颗粒。 Where does the silica come from? 这些硅从哪来的？ It must come from the ocean
It's evolved into something that is much subtler. 它已演变成某种更微妙的东西。 This is an actual text that was done by a non-male person of about 20 years old not too long ago. 这是一段真实的短信对话它是由一个20出头的姑娘在前不久写的。 I
