Its unique capsule design, acting like an enclosed air box, isolates the placement of the foam filter.

其独特的胶囊设计，表现得像一个封闭的空气箱，泡沫分离的位置过滤器。

youdao

Like the astronauts aboard Apollo 13 who had to build a CO2 filter from whatever was available in their capsule under the direction of engineers back on Earth, we are forced to innovate in real time.

WSJ: Tony Hayward: What BP Is Doing About the Gulf Gusher