kēxuéjiā / tōngguò / shēnhǎi / zuàntàn / yánjiū / le / yángqiào / de / zǔchéng / hé / jiégòu

科学家通过深海钻探研究了洋壳的组成和结构。

Scientists studied the composition and structure of the oceanic crust through deep-sea drilling.