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Gaseous. G-A-S-E-O-U-S. Gaseous means relating to gas. 中文：气体的。 Example: The gaseous smell filled the room. 中文：气体味充满了房间。 (pause) Conspicuous. C-O-N-S-P-I-C-U-O-U-S. Conspicuous means easily seen or noticed. 中文：显眼的。 Example: His bright shirt is conspicuous. 中文：他的亮色衬衫很显眼。 (pause) Keen. K-E-E-N. Keen means eager or sharp. 中文：敏锐的；热衷的。 Example: She is keen on learning English. 中文：她热衷于学英语。 (pause)