This film of water is about five miles thick at its deepest part . 这一薄层水最深的部分大约有五英里。
2.
Temperature read on a thermometer whose bulb is covered by a film of water or ice and which is exposed to the air in a position sheltered from direct solar radiation 从暴露于空气中但被遮挡不受直接太阳辐射的湿球温度表球面罩一层水或冰上读出的温度。
