at around ten to o'clock是否可以用?

at around ten to o'clock是否可以用? she____(sleep)late at around ten o'clock late at ten to six o'clock 英语：by around eight o'clock是否等于at about eight o'clock? Our plane ______(fly) to Beijing at ten o'clock. He go to bed at ten o 'clock.(否定句) the teacher are going to leave at ten o clock 对at ten o cloc I __ school at around ten o'clock in the moring yesterday At around twelve o'clock.翻译 it's at ten o'clock. Sam was here at ten o'clock. at ten o'clock 的意思