Opportunists must constantly invade new areas to compensate for being displaced by more competitive species.
“机会主义者”必须不断入侵新的地区，以弥补被更具竞争力的物种取代的损失。
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Commenting on the find, snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."
Snake expert Robert Henderson, from the Milwaukee Museum of Natural History, said, "Worldwide, new species of frogs are being discovered and described quite regularly."