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 leopard may be the hardest big cat to spot in the wild.
花豹也许是最难在野外找到的大型猫科动物了。
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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