zhè / xiàng / wēi / xiǎo / de / gǎi / jìn / xiàng / juān / liú / yí / yàng / zhú / jiàn / gǎi / biàn / le / zhěng / gè / xì / tǒng

这项微小的改进像涓流一样，逐渐改变了整个系统。

This small improvement gradually changed the entire system like a trickle.