The bubble is drawn up a tall vertical tower.

气泡被拉伸为垂直的高塔形状。

The proposal is to go upwards, with vertical towers of considerable size, each representing an entire new town by the time it's completed.

该提议是向上延伸，建造相当大的垂直塔楼，每座塔楼竣工时都代表着一个完整的新城镇。