[Mycroft Holmes]

Time flies like an arrow, but fruit flies like a banana.

[cynwoody]

Time flies like an arrow, but fruit flies like a banana.

The ambiguity vanishes on the Russian side. "Time flies" is "Vremya letit (Время летит)", but "fruit flies" is "plodovykh mushek (плодовых мушек)". The round-trip succeeds.