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自己是否做了足够的了解地质背景和沉积环境的功课？
Have I done sufficient work on geological background and depositional environment?
youdao
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在舒适的环境中，你绝不会学到信心的功课。
You will never learn faith in comfortable surroundings.
youdao
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在舒适的环境中，你绝不会学到信心的功课。
You will never learn faith in comfortable surroundings.
youdao