2. Place layer of segment above bulb layer. 广场层以上的部分灯泡层。
3. Stay in your room until you invent the bulb! 留在房间内，直到你发明出电灯泡来！
英英解释
n.
1. a modified bud consisting of a thickened globular underground stem serving as a reproductive structu
2. electric lamp consisting of a transparent or translucent glass housing containing a wire filament (u
3. a rounded part of a cylindrical instrument (usually at one end)
4. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla
5. a rounded dilation or expansion in a canal or vessel or organ
