...到海豹、企鹅、鲸鱼和南极磷虾等动物。 什么是南极洲(antarctica)? 地球最南端被称为南极,包括地球上第二小的大陆南极洲。南极洲是一个被海洋包围的大陆,陆地仍然埋藏在几乎一英里厚的冰盖下。它是一个最冷、人口最少...
...坑到地球和火星上冰川峡谷的相似之处。它还涉及到我们如何利用这项研究来研究红色星球上的生命。 ...
...公司今天宣布,该公司将免费下载其古希腊和古埃及教育之旅,内容基于该公司在《刺客信条起源》和《刺客信条奥德赛》中对这些世界的再现。旅游团在5月21日前可以免费领取。 你可以从育碧的网站下载探索之旅...
... A satellite image of the ozone hole over Antarctica in October 2015, when it was at its largest. (NASA) 保罗A。美国宇航局戈达德太空飞行中心负责大气科学的首席科学家纽曼说,这项研究提出了一个重要的问题,即除了氯...
...Arctic is governed by somewhat different processes than the sea ice around Antarctica, and the very different geography of the two poles plays a large role. Sea ice in the Arctic exists in a **all ocean surrounded by land masses, with greater input of dust, aerosols, and soot than in the Southern He...
...U.S. Department of State has revoked immigrant and non-immigrant visas for travelers to the United States from Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen. Please note that this does not affect U.S. resident card holders. Customers who meet these qualificati*** will not be able to board a Uni...
... Drilling an ice core in Antarctica. Photo: National Institute of Polar Research 根据本周发表在《科学进步》杂志上的一项新研究,冰芯的最新发现表明,位于地球最南端的南极...
你是独行侠吗? 你独自旅行可能是有意为了获得更多的**,自由和灵活性,也可能是无意的,但由于你无法控制的因素。不管为什么,单飞需要额外的计划和准备,以使一个安全和难忘的旅程,最重要的是不要感到孤独...
在这里,我们将看看如何解决动量问题,在一维和二维使用守恒定律的线性动量。根据这个定律,只要没有外力作用,粒子系统的总动量就保持不变。因此,解决动量问题需要计算系统在相互作用前后的总动量,并将两...
主差行程(main difference travel) vs. 旅游业(touri**) Although travel and touri** are two words that are always used together, each of these words has specific meanings. Travel refers to the activity of going on a long journey. Touri** also refers to travel, but there is a specific ...