And temperatures drop to below minus 30 degrees Celsius. 气温可以降至零下30摄氏度以下
Every journey below the surface can reveal something extraordinary. 每一次水中之旅都能揭开奇妙事物的面纱
are flooding many of the nests from below... 从底部淹没了许多巢穴
wriggle free and drop into the stream below. 可以扭动着挣脱出来 掉进下方的溪流里
The forest floor is 30 feet below the water's surface. 水面至林地表层深达九米