I think I can reach the roof if you give me a leg up.
机译:我想如果你给我一条腿,我可以爬到屋顶。
2. To provide support, encouragement, or an added advantage. I wouldn’t have been able to afford college if I hadn’t been given a leg up from my parents.
机译:2.给予支持、鼓励或额外的优势。如果没有父母的帮助,我上不起大学。
Our after-school program is aimed to give students a leg up in any subject they are having difficulty with.