【閱讀原文】 標題：The Scariest Spacewalk in 50 Years Spaceflight is entering its cowboy era. 正文：Early this morning, four private astronauts blasted into orbit to carry out SpaceX’s most dangerous mission yet. After a few days of circling Earth, the passengers will suit up and open the hatch of their spaceship. All of the precious, breathable air inside their capsule will escape into the cold void. Two of them will venture out, gripping an exterior ladder with their gloved hands as they dangle over the planet. All four will be exposed to the vacuum of space, and they will rely on their spacesuits, which SpaceX has never tested in space before, to keep them alive. It will be the first civilian spacewalk in history—and perhaps the riskiest spacewalk in decades. 知識點：blast v./bl?st/ 1. to violently destroy or break sth into pieces, using explosives（?炸藥）炸毀，把…炸成碎?；爆破 ? They blasted a huge crater in the runway.他們在飛機跑道上炸了?個?坑。 ? They had to blast a tunnel through the mountain.他們得炸出?條穿?隧道。 2. to direct air, water, etc. at sb/sth with a lot of force向…猛吹；（??）向…噴射 ? Police blasted the demonstrators with water cannons.警察??壓?炮噴射?威者。 獲取外刊的完整原文以及精講筆記，請關(guān)注微信公眾號「早安英文」，回復“外刊”即可。更多有意思的英語干貨等著你！