About three billion years ago, life on our planet began in the deep blue seas.
大约三十亿年前，我们星球上的生命体起源于深蓝色的海洋。
Seas were calm and within a short time turned azure blue in color.
海上风平浪静，海水很快就变成了蔚蓝色。
The blue water in the oceans and seas of the Earth makes a dramatic image.
地球上大洋大海里的湛蓝色的水构成了一幅冲动人心的图画。
The blue water in the oceans and seas of the Earth makes a dramatic image.
地球上大洋大海里的湛蓝色的水构成了一幅冲动人心的图画。
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