smokeless
adj [usu attrib 通常作定语]
1 burning with little or no smoke (燃烧时)无烟的
smokeless fuel 无烟燃料.
2 free from smoke (环境)无烟的
a smokeless zone, ie an area where smoke is prohibited 禁止吸烟区.
🗣️ 情景例句
After the marathon, most of the competitors looked all in.