n.底流，水下逆流，潜在的倾向(或特质)，感染力

原形：undertow复数：undertows

The boat fought against the strong undertow, struggling to reach the safety of the harbor.
小船与强劲的回流抗争着，努力驶向港口的安全地带。
Despite being a strong swimmer, he found himself caught in an undertow and had to be rescued by lifeguards.
尽管他游泳技术很好，但还是被一股暗流卷入，最后由救生员救起。
The novel explores the emotional undertow that follows a family tragedy.
这本小说探讨了家庭悲剧之后的情感暗流。
After the storm, the calm sea deceived many into忽视the dangerous undertow beneath the surface.
暴风雨过后，海面看似平静，却让很多人忽视了水面下潜藏的危险暗流。
The economic downturn created an undertow that affected even the most stable industries.
经济衰退形成了一股暗流，甚至影响到了最稳定的产业。
She felt the emotional undertow of her childhood memories every time she visited her old hometown.
每次回到故乡，童年的记忆总会让她感受到情感上的暗流涌动。
The film's subtle undertow of melancholy adds depth to its otherwise light-hearted storyline.
电影中淡淡的忧郁暗流为原本轻松愉快的剧情增添了深度。
He couldn't shake off the undertow of regret after making that crucial mistake at work.
在工作中犯了那个关键错误后，他始终无法摆脱后悔的情绪暗流。
The political undertow of the scandal threatened to undermine the entire administration.
这场丑闻背后的政治暗流威胁到了整个政府的稳定。
Swimming against the undertow requires not just strength but also a strategic approach to conserve energy.
逆着水流游需要的不仅仅是力量，还需要节省体力的策略方法。