英語翻譯：

a tiny stream

例句：

1. 夏天那條小河的水量減少，成了涓涓溪流。
   The stream is reduced to a mere trickle in summer.
2. 小河越來越窄，最后變成了涓涓細流。
   The stream had thinned down to a mere trickle.
3. 夏天那小河水量減少，成了涓涓細流。
   The stream is reduced to a mere trickle in summer.