once again什么意思解释？

He once again raised his baton and brought in the brass.他再次举起指挥棒，让铜管乐部加入进来。She started once again on the steep upward climb.她又开始沿着陡峭的山路往上爬。Pregnancy wasn't all plain sailing and once again there were problems.孕期并非一帆...

once again的音标：once again的英式发音音标为：[wʌns ə'ɡen]once again的美式发音音标为：[wʌns ə'ɡɛn]...