Already, the Chikyu research vessel is capable of fetching samples at depths of 2, 890 feet below the seabed, two to four times that of any other drill.
地球号考察船已经能够取出海床以下2 890英尺深处的样本，这个深度是任何其他钻机的二到四倍。
2
Already, the Chikyu research vessel is capable of fetching samples at depths of 23,000 feet below the seabed, two to four times that of any other drill.
地球号考察船已经能够取出海床以下2,890英尺深处的样本，这个深度是任何其他钻机的二到四倍。
3
By 2011 scientists aboard a Japanese deep-sea drilling ship called Chikyu hope to start drilling through a thin piece of oceanic crust to reach Earth's mantle.