These oils act to replace the original resins as they wear away through natural processes.
These oils act to replace the original resins as they wear away through natural processes.
这些油也可以代替原始的树脂，因为它们通过光合作用把它分解了。
These oils act to replace the original resins as they wear away through natural processes.
这些油也可以代替原始的树脂，因为它们通过光合作用把它分解了。