The gunk on the beak of this satin bowerbird (Ptilonorhynchus violaceus minor) is plant matter, which he mashed up to paint his bower's inner sanctum in a rain forest in Queensland, Australia.
这只缎蓝园丁鸟(Ptilonorhynchus violaceus minor)嘴上粘粘的东西是种植物。在澳大利亚昆士兰的雨林里，园丁鸟把这种植物涂在他们的巢穴最里面的密室里。
Forest ecologists have been more concerned than agronomists with the inner mechanisms of natural and artificial ecosystems.
森林生态学家比农学家更关心天然生态系统和人工生态系统的内部机制。
The country's greatest forest stretches across Inner Mongolia and Heilongjiang.
我国最大的森林横跨内蒙古和黑龙江。
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