The canister USES a fan to force air through the filter, and then the purified air runs through a hose to the mask.

罐中的风扇使空气流过过滤器，这样净化的空气通过软管达到面具。

youdao

The canister USES a fan to force air through the filter, and then the purified air runs through a hose to the mask.

罐中的风扇使空气流过过滤器，这样净化的空气通过软管达到面具。

youdao