向下交叉用英语怎么说

"Downward cross" is the correct term to describe the action of crossing something downward in English. This term is commonly used to describe the action of crossing one's arms or legs downward, or the action of crossing a line or an object downward.
The term "downward" is an adjective that refers to the direction that is opposite to up or towards the bottom. The term "cross" is a verb that means to move or extend over or across something. Therefore, the phrase "downward cross" refers to the action of crossing something in a downward direction.
Here are a few examples of sentences using the term "downward cross" in English, along with their translations in Chinese:
She crossed her arms downward in front of her chest. (她将胳膊向下交叉在胸前。)
He crossed his legs downward as he sat on the chair. (他坐在椅子上时将腿向下交叉。)
The runner crossed the finish line downward as he leaned forward. (跑步者向前倾斜时将终点线向下穿过。)