| 释义 |
●the bottom of the ˈhour (especially NAmE) (on a TV/radio programme, etc.) 30 minutes past the hour on a clock （在电视或电台节目等中）半点◆The radio station provides hourly newscasts at both the top and bottom of the hour.
电台在整点和半点播报每小时更新的新闻。 OPP the top of the hour |