zhè / duàn / wén / zì / méi / yǒu / zhí / shuō / xìng / xíng / wéi / ér / shì / yòng / yú / shuǐ / zhī / huān / yì / bǐ / dài / guò

这段文字没有直说性行为，而是用鱼水之欢一笔带过。

The passage does not state the sexual act directly, but briefly alludes to it with “鱼水之欢”.