translation.en: So I built this small sailing robot with the rudder at the front, and I was trying to pull something very long and heavy, so that's a four-meter-long object just to pull, and I was surprised with just a 14-centimeter rudder, I could control four meters of absorbent.
translation.zh: 所以我做了这只小帆船机器人 它的舵在前面 我试图拖曳一些又长又重的东西 所以要拖的是个四米长的物体 让我惊讶的是仅仅14厘米的船舵 就能控制四米长的吸收材料