acetylene

n [U] (chemistry 化) colourless gas that burns with a bright flame, used in cutting and welding metal 乙炔; 电石气.

accurate, accurately, accursed, accusation, accusative, accusatory, accuse, accuse sb. of sth., accused, accused of, accuser, accusingly, accustom, accustomed, accustomed to, ace, acerbic, acerbity, acetate, acetone, ache, achievable, achieve, achieve one's goals, achievement, achiever, Achilles, Achilles' tendon, aching, achromatic, achy, acid, acid rain, acidic, acidify, acidity, acidly, acidosis, acidulated, acidulous,