生物作用形成的沉积岩的英文

organically formed sedimentart rock

organicallyformedsedimentartrock

• 生物:    living things; liv ...
• 作用:    act on; affect
• 形成:    form; take shape; ...
• 的:    4次方是 The fourth po ...
• 沉积岩:    sedimentary rock