“crossing”意思是?

zebra crossing是词组吗? 是on the crossing还是at the crossing at the first crossing的意思 crossing the river to school 这个题目crossing为什么是ing 啊在句中做什么成分 I will be crossing you in style some day 意思 Living life is not crossing a field 的意思 为什么作业上是drive through each crossing?想不通 When crossing the road, you can't be too careful.这句话什么意思? When he was crossing the street,a bike koncked him down什么意思 有一道题是look out when you cross the road,用crossing可以吗? Pleace drive _______ (slow) at the crossing答案是slowly为什么加ly 英语翻译句子是when you are crossing a road,stand well back from the