表示速度时a second 和 every second 的区别就这些分了,可怜可怜吧!

表示速度时a second 和 every second 的区别就这些分了,可怜可怜吧! 英语中速度的表示法英语中的速度是怎么表示的.如：5千米每秒是说 “five kilometres a second,还是five kilodetres every second? the second和a second的区别 a second和the second的区别 second-ever怎么翻译 a second time和for a second time的区别 The clock rotation for a second.I will love one more second.Love u forever and ever the second time和a second time的区别是 a second one 和 the second one~分别怎么翻译 the second time和a second time的区别 请问a second 和 the second的区别 请问a second 和 the second的区别 Today,more people speak English as their first,second or a forejin than ever before意思? Today,more people speak English as ther first,second or a foreign language than ever speak English as their first,second or a foreign language than ever second chances为什么chance要用复数?那a second chance和the second chance呢 a third one和the second a second