【pickupleave能不能换成是pickleaves?小学英语中“摘树叶”教科书的翻译是“pickupleaves”,练习里面遇到“摘苹果”却是“pickapples.”为什么不能换成是为pickleaves,pickupapples啊?pickup跟pick到底】

　　pickupleave能不能换成是pickleaves?

　　小学英语中“摘树叶”教科书的翻译是“pickupleaves”,练习里面遇到“摘苹果”却是“pickapples.”为什么不能换成是为pickleaves,pickupapples啊?pickup跟pick到底如用法如何区别啊?

　　可是图片是爬到树上摘树叶啊？