step 是什么意思？step的学习方法【知识点总结】

If you step on something or step in a particular direction, you put your foot on the thing or move your foot in that direction.踩 This was the moment when Neil Armstrong became the first man to step on the Moon. 正是在这一刻，内尔·阿姆斯特朗成为了登月第一人。