The disappearance of this summer sea ice pose significant dangers, scientists have warned.
科学家警告过,夏季冰盖的消融会引发十分严重的危险。
Scientists asked participants to detect the onset or disappearance of different pure-tone sounds within soundscapes of ranging complexity.
科学家们要求被试者探测复杂性在一定范围内的音景中不同纯音的出现和消失。
Other scientists are debating his theory about the disappearance of dinosaurs.
其他科学家们在辩论他关于恐龙消失的学说。
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