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- Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
- The storm cast the little rowboat on the rocks. 风暴把这条小划艇抛到岩石上。
- The stricken tanker began to break up on the rocks. 油轮被击中后撞上礁石,毁了。
- These rocks are awash at high tide. 这些礁石在涨潮时被海水淹没。
- Rocks are worn smooth through the agency of water. 岩石由于水的作用而变得光滑。
- The waterfall is wearing away the rocks. 瀑布不断地冲蚀着岩石。
- The waves are lashing against the rocks. 波浪冲击着岩石。
- Her age is of secondary interest. 她的年龄不太重要。
- A fall of rocks blocked the road. 掉落的岩石把路封住了。
- The ship was battered against the rocks. 船被岩石撞坏了。
- The water frothed as it tumbled down the rocks. 水冲击在岩石上溅起了泡沫。
- Huge waves drove the yacht onto the rocks. 巨浪把游艇卷到岩石上。
- There are two types of rocks in this area. 这个地区有两种类型的岩石。
- In secondary school, children get more advanced knowledge. 在中学，孩子获得更深一些的知识。
- The boat was heading for some rocks. 那船正驶向礁石。
- A secondary matter; a side issue. 次要的第二位的事; 较次要的问题
- The boys were climbing about on the rocks. 男孩子都在岩石上乱爬呢。
- The ship was broke up on the rocks. 船在礁石上撞毁了。
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- A secondary mine passageway between two main shafts or tunnels. 次要矿山甬道矿井中连接两条大隧道的小巷道
