1. Suddenly they came to a waterfall which dropped into an underground lake at the bottom of the cave.
    突然，他们来到一道瀑布前，那瀑布奔泻而下，注入洞底一处地下湖里。

2. Some are walking by the lake.
    他们有的在湖边漫步，

3. People enjoy swimming and playing in the cool water of a lake in the summer.
    夏天人们还喜欢在清凉的湖水里游泳和玩耍。

4. Many farmer´s fields are irrigated by water brought from a river or lake through bamboo pipes.
    很多农民的田地是通过竹管从河流或湖泊中引水灌溉的.

5. Mud and silt have been continuously deposited in the lake.
    泥沙不停地淤积在这湖里,

6. In 1948, he went to lake Kivu in the Congo to observe a new volcano which he later named Kituro.
    1948 年他到刚果的基伍湖去观察一个新火山，后来他给这座火山起名为基图罗。

7. I could see no valley, no farms, no cottages and no church spire----only a lake.
    可现在我却看不出山谷，看不见农舍，也看见教学尖顶，看见只是一片湖泊。

8. In 1948, he went to Lake Kivu in the Congo to observe a new volcano which he later named Kituro.
    1948年他去了刚果的基伍湖，对一座后来被他命名为基图罗的新火山进行观察。