Information is collected through the use of special rotating antennae found on the two strands that form the helix and located where each strand intersects with its four ladders.是什么意思_Information is collected through the use of special rotating antennae found on the two strands that form the helix and located where each strand intersects with its four ladders.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句