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。
On first seeing a Snow Leopard desktop, you probably won't spot the differences from its predecessor.
第一眼看到雪豹的桌面，你可能不会指出和以前版本的不同。
The fundus change is characterized by the"leopard-spot".
同时可见以“豹点斑”为特征的眼底改变。
The fundus change is characterized by the"leopard-spot".
同时可见以“豹点斑”为特征的眼底改变。
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