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Smile is just the medium of positive energy.
微笑只是正能量的媒介。
youdao
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A classic case is our current use of Oil as a medium of energy.
一个典型的例子就是我们目前使用石油作为能源媒介。
youdao
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A classic case is our current use of Oil as a medium of energy.
一个典型的例子就是我们目前使用石油作为能源媒介。
youdao