B1 中級 1067 タグ追加 保存
動画の字幕をクリックしてすぐ単語の意味を調べられます!
単語帳読み込み中…
字幕の修正報告
Mars, the Red Planet, made from rock, iron, fable and myth.
Since the ancients named it for the God of War,
it has had a unique hold over the human imagination.
Even before humans set foot on the moon,
it was seen as the next step but why?
There are similarities between Mars and Earth.
It has a 24-hour day and four seasons.
Though its air is too thin to breathe,
and its surface too cold for unsheltered life,
it is far more astronaut-friendly than any of the other planets.
It has huge canyons and vast volcanoes.
It's riverbeds, deltas, and dried lakes speak of a past more watery than its arid present.
Yet, although it is scarce and briny,
there are still some liquid water on Mars today, and water is key to life.
The possibility that Mars once had life
or might just possibly still have it today
is one of the reasons more space probes have been sent there than to any other planet.
NASA's InSight probe,
which landed in November is the latest,
and Europe's ExoMars rover will arrive next year.
NASA talks of sending humans to Mars on a new spacecraft within the next two decades.
Elon Musk's space technology company SpaceX has plans as early as 2024.
Such missions with crews would be among the biggest technical challenges humans have ever undertaken.
The journey can only be made when the planets are properly aligned.
That only occurs roughly every 26 months,
but even then, it takes around nine months
to travel from one planet to the other.
The challenge of a life-support system that can operate for years without resupply is daunting.
The cost will be high and the hurdles immense.
But the challenge is so exciting,
it seems certain that some will try it,
and quite likely that some will die trying.
Coming up next Thursday, the hunt for oceans in space.
コツ:単語をクリックしてすぐ意味を調べられます!

読み込み中…

Mars: when will humans get there? | The Economist

1067 タグ追加 保存
Jerry Liu 2019 年 3 月 13 日 に公開
お勧め動画
  1. 1. クリック一つで単語を検索

    右側のスプリクトの単語をクリックするだけで即座に意味が検索できます。

  2. 2. リピート機能

    クリックするだけで同じフレーズを何回もリピート可能!

  3. 3. ショートカット

    キーボードショートカットを使うことによって勉強の効率を上げることが出来ます。

  4. 4. 字幕の表示/非表示

    日・英のボタンをクリックすることで自由に字幕のオンオフを切り替えられます。

  5. 5. 動画をブログ等でシェア

    コードを貼り付けてVoiceTubeの動画再生プレーヤーをブログ等でシェアすることが出来ます!

  6. 6. 全画面再生

    左側の矢印をクリックすることで全画面で再生できるようになります。

  1. クイズ付き動画

    リスニングクイズに挑戦!

  1. クリックしてメモを表示

  1. UrbanDictionary 俚語字典整合查詢。一般字典查詢不到你滿意的解譯,不妨使用「俚語字典」,或許會讓你有滿意的答案喔