s.l 基本例句 un.圣劳伦斯河;🌏色;蓝条纹;宗-刚 I tried to get a sample for O.S.L. dating here, but when bits of the deposit started falling down around me, I decided that hammering a metal pipe into this rock pile might not be such a good idea. 我尝试就在这儿拿一些光释光的样本,但是,当一些小的沉积开始在我周围坠落,我决定把一个金属馆子锤进岩石里当桩也许不是一个好点子。 yeeyan