"Eels aren't very fast, but they can swim forever," says Guido van den Thillart, an animal physiologist at Leiden University in the Netherlands who is measuring the speed of this captive fish.
吉多·冯·丹·希莱特说。他是荷兰莱顿大学动物生理学家，正在测量这条被捉鱼的速度。
"Eels aren't very fast, but they can swim forever," says Guido van den Thillart, an animal physiologist at Leiden University in the Netherlands who is measuring the speed of this captive fish.
吉多·冯·丹·希莱特说。他是荷兰莱顿大学动物生理学家，正在测量这条被捉鱼的速度。
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