Pentafluoride
五氟化物
??? 情景例句
Are the beaches safe for swimming?
在這兒的海灘游泳安全嗎？
What the hell are you doing?
你到底在做什么？
and the red and gold of her superstructure ablaze with colour,
金碧輝煌的船樓閃耀著燦爛的色彩。