preaxial surface的用法和樣例：
例句
- To expose the anterior surface of the prostate, it is necessary to displace the peritoneum superiorly.
在暴露前列腺的前面時，必須向上推開腹膜。 - This boundary is like the outer circumference of the Escher print or the surface of the solid cylinder I considered earlier.
這個邊界就類似艾雪版畫的外緣或者前面提過的圓柱體的表面。
