聚集而成的肠神经系统 enteric nervous system ; ENS
原因很简单：恒星、行星都是由同样一片巨大的尘埃、气体聚集而成的。
The reason for that is simple: both stars and planets coalesce out of the same vast pool of dust and gas.
它们把卵产在猪笼草内。蝌蚪在猪笼草内由雨水聚集而成的小水池中生活。
They lay their eggs on the inside of the pitchers, and tadpoles grow up swimming in the tiny pools of rainwater that collect in the bottom of these plants.
他的朋友开导他说：“天是由气聚集而成的，没有重量，不可能塌下来。”
His friends advised him, "The sky is an accumulation of gas, thus weightless, and so it is impossible collapse."
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