1660s, "stream of water or air flowing beneath the surface or beneath another current," a hybrid formed from under + current (n.). The figurative sense of "suppressed or underlying character" is attested from 1817.
权威例句
1. 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。
2. 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。
3. There was no subtle undercurrent to the question.
他的话里并没有什么隐晦的暗示.
4. His writing lacks this undercurrent of protest and satire.
他的创作缺乏抗议和讽刺的潜在力量.
5. There was an undercurrent of antipathy between them.