At this time the Suns gravitational force partially offsets the Moons gravitational force causing lower than normal tides called neap tides.是什么意思_At this time the Suns gravitational force partially offsets the Moons gravitational force causing lower than normal tides called neap tides.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句