该小组强调，是三者结合，而非任何一个单独的特点，维持啄木鸟啄而不伤。
The team stresses that it is the combination of the three, rather than any one feature, that keeps woodpeckers pecking without injury.
该小组强调，是三者结合，而非任何一个单独的特点，维持啄木鸟啄而不伤。
The team stresses that it is the combination of the three, rather than any one feature, that keeps woodpeckers pecking without injury.
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