翻译at a certain 急

翻译at a certain 急 翻译She is not certain at first. a certain food怎么翻译?（a certain?） stand a certain degree帮忙翻译阿. 英语 in a certain in a certain way 是个词组 还是说certain 当什么翻译 a certain at some certain time 区别几个与'time有关的词组at certain time at certain timesat a certain time 这些词组都对的吗?有什么区别呢? 急!求英文课文翻译!一小时之内答复...以下是《新编实用英语综合教程2（北京版）》第七页的课文!求翻译! if someone asks if you are free at a certain time and invites you to an event,you are not required to commi but we are faced with a certain difficulty翻译 to have a certain quality in sb 怎么翻译 怎么翻译draw some cartoons on a certain subject we have to behave in a certain way,翻译 翻译you are almost certain to be in a position least-certain翻译 翻译:Those at the bottom do not worry about chances for promotion because those at the top retire at a certain age so that others may have their turn. a certain 英语水平高的人进.a certain 在这个句子中又该怎么翻译?I aksed my mum to buy me a certain biscuit. 翻译It isn't quite certain that he will be present at meeting.