英語翻譯
Have you heard about “Survival Holidays”?“Survival Holidays” is for children to go into the lonely place for exciting activities.Now about 1,100 companies are allowed to take children into the great outdoors without their parents.
The reason why people like “Survival Holidays” is that they think being close to nature is good for children.Many children in big cities spend all time watching TV and playing computer games.“Survival Holidays” gives them an important change.
Is “Survival Holidays” a wonderful idea?Maybe it is.Children need more free time to play.They need to be left on their own,without adults disturbing them.Parents care too much about their children.They like to see the children being busy with activities that are controlled by adults,which causes many problems.Children don’t know what to do when they are in danger.Even something like crossing a small river seems to be a hard challenge.Children are not comfortable with danger.Even slight danger like getting their feet wet or falling down seems very terrible to them.
Many people think the survival activities are good for children.Even years later,they will still remember what they have learned.Some have learned to stay calm in different times.Some have learned how to keep safe.Others have learned how to work in a team.All these skills will help them a lot in their lives.
Why don’t birds get lost on their long flights from one place to another?Scientists have puzzled over this question for many years.Now they are beginning to fill in the blank.
Not long ago,experiments proved that birds depend on the sun to show them the way during daylight hours.But what about birds that mainly fly at night?Tests with man-made stars have shown that certain night-flying birds are able to follow stars on their long-distance flights.
One such bird－a warbler—had spent its lifetime in a cage（籠子）and had never flown under a natural sky at night.Yet it showed an inborn ability to use the stars.The bird’s cage was put under a man-made star-filled sky.The bird flew in the same direction as its outdoor cousins.Any change in the position of the man-made stars caused a change in the direction of its flight.
Scientists think that warblers,when flying in daylight,use the sun for guidance.But stars are their main dependence of flying at night.What do they do when stars are hidden by clouds?They find their way by such landmarks as mountains,beaches,and rivers.But when it’s too dark to see these,the warblers circle helplessly,unable to get their directions.