leopard seal短语⁸⁴³²⁰⁺⁸ 基本例句 n.豹纹海豹;豹形海豹海豹科 Even then, the penguins are cautious; they stay in the water only long enough to feed, and they're adept at remaining motionless when they're on thin ice and spot a leopard seal. 尽管如此，企鹅也十分谨慎：它们仅仅在捕食时才呆在水下；一旦意识到冰面很薄或是附近出现海豹，它们就会紧紧地趴在冰面上，一动不动。 yeeyan