You can see a clear line where the black rock becomes white.
你可以看到一条清晰的线条，在那里黑石头变成了白色。
The first officer stood there, his head all clear of the rock.
第一个军官站在那儿，脑袋完全露在石头上面。
They have clear difference with the soil and rock in normal.
它们和正常意义上的土及岩石均有明显的区别。
The crew strained at the OARS to keep the boat clear of the rock.
船员们使劲划桨让船避开礁石。
The crew strained at the OARS to keep the boat clear of the rock.
船员们使劲划桨让船避开礁石。
应用推荐