smokelessly
常见例句
- An effective system uses fuel that ignites easily, burns as smokelessly as possible.
有效的加热系统所用的燃料必须易于引火，燃烧时尽可能无烟。 - 33. An effective system uses fuel that ignites easily, burns as smokelessly as possible.
有效的加热系统所用的燃料必须易于引火，燃烧时尽可能无烟。 返回 smokelessly