"You've got to have ample knowledge about the ecological phenomena involved in overwintering if you are to find previously undiscovered overwintering valleys and prevent their accidental destruction," says Chao.
「要對越冬的生態現象有足夠的認識，才能儘早找出未被發現的越冬谷，以免又被無知破壞，」趙仁方說。