They got rid of those and they're using natural circulation to cool the core, again more passive.
他们除去了那些，他们在使用一个自然的再循环，来将核心冷却，还是更被动的。
2
The central core of the building features a double skin curtain wall system, that enables passive climate control for the vertical circulation and inner Spaces.
建筑的中央核心区采用双层幕墙系统，能够为垂直循环和内部空间提供被动气候控制。
3
The residual heat removal system with natural circulation is a passive safety system.