Suddenly she asked her father why he kept so many old newspapers locked away there,

她突然问父亲为什么把这么多的旧报纸锁在柜子里，

In the early days of the settlement of Australia,

在澳大利亚移民初期，

Poison to a snake is merely a luxury; it enables it to get its food with very little effort, no more effort than one bite.

毒液对毒蛇来说只不过是一种舒适生存的优越手段，它使蛇不用费多大力气就能捕获到食物，轻咬一口即可。

From the seventeenth-century empire of Sweden,

从17世纪瑞典帝国

many of them serious and senior scientists---- who dream of sending people to it.

其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。

Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.

如果有相配的电压，可以煮少量水的便携式热水装置是有用的。