John gave a very exposition of the facts. 约翰把事实解释得很清楚。
His pictures were shown at the Paris exposition of 1878. 他的画在1878年巴黎博览会上展览过。
This thesis makes an exposition of the mathematics logicism thought of Russell ,the great mathematician and logician in phytogeny of logic. 本文对伟大的数学家和逻辑学家伯特兰·罗素的数学逻辑主义思想进行了研究和探讨。