始终显示原文
小黑人

欢迎使用考满分精听听写

截止昨天,已经有 252988 同学完成了 4103155 次的练习

开始练习 查看新手引导

原文已被隐藏,你可用 快捷键 - 或点击 显示原文 按钮来查看原文

第1段

1 .<-NARRATOR:-> Now listen to part of a lecture on this topic in a biology class.

该句暂无译文!

第2段

1 .<-MALE PROFESSOR:-> So, here's a good example of this.

该句暂无译文!

2 .Mites are very small insect-like creatures.

该句暂无译文!

3 .Mites live in tropical climates and feed on nectar and pollen in flowers.

该句暂无译文!

4 .But these tropical flowers don't last long,

该句暂无译文!

5 .they wilt and fall off quickly, and so the mites need to find new flowers in order to get more nectar and pollen to eat.

该句暂无译文!

第3段

1 .But the mites can't fly,

该句暂无译文!

2 .and they are so small

该句暂无译文!

3 .that it'd take them a while and a lot of effort to climb down one flower,

该句暂无译文!

4 .crawl to another one,

该句暂无译文!

5 .and climb all the way up again.

该句暂无译文!

6 .So how do they get to the next flower?

该句暂无译文!

7 .Well, there's a bird,

该句暂无译文!

8 .the hummingbird... hummingbirds eat the nectar from the same flowers as the mites.

该句暂无译文!

9 .So when a hummingbird comes around and sticks its beak into the flowers to get the nectar out . . .

该句暂无译文!

10 .the mites quickly climb onto the hummingbird.

该句暂无译文!

第4段

1 .Well, as I mentioned, mites are pretty tiny,

该句暂无译文!

2 .so the hummingbird isn't harmed in any way.

该句暂无译文!

3 .And all they do is stick to the hummingbird.

该句暂无译文!

4 .Since the hummingbird also goes from flower to flower for nectar, it takes the mites along.

该句暂无译文!

5 .Once the hummingbird gets to the next flower,

该句暂无译文!

6 .the mites climb off and eat some pollen and nectar there...

该句暂无译文!

7 .on the new flower. Without the hummingbird carrying them from one flower to another,

该句暂无译文!

8 .the mites would find it much more difficult getting food.

该句暂无译文!