今天的电瓶车课堂，从一辆洒水车开始。
Today’s e-bike classroom starts with a sprinkler truck.
路上，车头喷着水，把路面洗得亮亮的。Leo 看着喷出来的水花，自然会问：这么多水，最后去哪了？我说，有的流进下水道，有的留在路面上慢慢干；如果旁边有花坛、树池，雨水也好，洒出来的水也好，都能帮着把泥土润一润——城市里的花草，也要喝水。
On the road, nozzles at the front of the truck sprayed water and left the street shining. Watching the spray, Leo naturally asked: where does all that water go? I said some runs into the drains, some stays on the pavement and dries; and if there are flower beds or tree pits nearby, rainwater—and the water from the truck—can help keep the soil moist. Plants in the city need to drink, too.
水的去向说清楚了，下一个问题几乎是顺手就来的：那这辆车、这些水，是谁出的钱？我说，很多城市里看得见的服务——扫街、洒水、路灯、公园——背后常常有一笔大家一起交的钱，叫税收。你长大以后工作、买东西，也可能要交一部分；政府再用这些钱，请人把路洗干净、把花坛照料好。不是某一家人单独付钱，是很多人一起分摊。
Once it was clear where the water goes, the next question almost asked itself: who pays for this truck and this water? I said many of the city services you can see—street sweeping, street washing, streetlights, parks—often rest on money people pay together, called tax. When you grow up and work or buy things, you may pay some too; the government then uses that money to hire people to wash the streets and tend the flower beds. It isn’t one family paying alone—many people share the cost.
再往下说一层，就碰到一个更大的词：城市治理。对六岁的孩子，我这样讲——一座城市像一个大家庭的院子：路要扫、灯要亮、花要浇、雨来了水要排得出去。总得有人商量规则、安排人手、用好大家交的钱，让这些事天天发生。洒水车只是其中一个很小的动作；看见它，其实是在看见这座城市怎样被照料。
One layer deeper, we meet a bigger word: urban governance. For a six-year-old, I put it this way—a city is like a big family’s courtyard: streets need sweeping, lights need to stay on, flowers need watering, and when rain comes the water must have somewhere to go. Someone has to agree on the rules, arrange the people, and use the shared money well, so these things happen every day. The sprinkler truck is only one small move; seeing it is really seeing how this city is looked after.
我们没有把「税收」「治理」讲成课本定义，只是顺着一辆洒水车，把一条链子走完：冲路的水 → 路边的花草 → 谁来付钱 → 大家一起把城市养起来。
We didn’t turn “tax” or “governance” into textbook definitions. We simply followed one sprinkler truck down a chain: water on the street → plants by the roadside → who pays → all of us together keeping the city going.
六岁，已经在问：这座城，是谁在照料。
Six years old—and already asking who looks after this city.
By Felix · Growth & Wealth · International Education