So we have not yet cracked the problem of making it available as a rescue device, as a vending device during the floods in eastern India, when you have to deliver things to people in different islands where they're marooned.
水路を通って行けるのに 救助や行商に使ってもらうには まだまだ課題がある 東インドの洪水の際に 孤立してしまった 個々の島々に物を届ける 行商用にも使えるのに