undercurrent
[ˈʌndərkɜ:rənt]
n.
潜流，暗流;
潜在的感情、影响或倾向（尤指与表面相反的）;
[电]电流不足;
[矿]分支洗金槽;
例句:
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I detect an undercurrent of resentment towards the new proposals.
我察觉到对新提案有一股潜在的不满情绪。
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Colin tried to swim after him but the strong undercurrent swept them apart.
科林想跟在他后面游，但强大的暗流把他们分开了。
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There was no subtle undercurrent to the question.
他的话里并没有什么隐晦的暗示.
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There's no undercurrent of anything between us.
来自THETIMES
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The Minotaur pictures carry an undercurrent of threat.
来自THETIMES
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Emotions are raw and intense and there is often a nasty undercurrent.
来自THETIMES