北极区

The loss of pack ice also makes sea-transport in the Arctic easier for longer periods each year.

浮冰块的减少也使得北极区的更长时期的海运变得更容易。

But it also threatens their environment, their homes and, for those whose traditions rely on the ice-bound wilderness, the preservation of their culture.

在北极区，在极端冰冷环境里生存了几百年的本地部落注意到了气候和野生动物的变化，他们想去适应这种变化，但常常不知所措。

L In the farthest north regions, there is sea ice all year round.

在最北极区有着终年不化的冰的海洋。

Soil with a frozen subsoil that is characteristic of arctic and subarctic regions.

黑色的腐殖土，有结冻的底土，是北极区和亚北极区的特征。

A black mucky soil with a frozen subsoil that is characteristic of arctic and subarctic regions.

黑色的腐殖土，有结冻的底土，是北极区和亚北极区的特征。

That is characteristic of arctic and subarctic regions.

底土'。''，是北极区和亚北极区的特征。

A black mucky soil with a frozen subsoil that is characteristic of arctic and ''.

黑色的腐殖土，有结冻的底土，是北极区和亚北极区的特征。

Abramovich-funded subsidies have restored the herd to 200,000 and given the Chukchi wages and hunting weapons. Reindeer herders Aleksei Omrynkau, 57, and his wife Katy, 56, a Chukchi couple, have spent their lives in the sub-Arctic tundra and live in a teepee, or yaranga, made from reindeer skins.

而阿布补贴使得鹿群的数量回升到20万只，同时发给楚科其人工资和打猎用具。57岁的牧人Aleksei Omrynkau和妻子56岁的Katy是一对楚科其族夫妇，在亚北极区的苔原带上度过了一生，他们住在圆锥形帐篷或者用驯鹿皮制成的yaranga里。

Low-growing herbs widely distributed in temperate and arctic northern hemisphere: sandworts; distinguished from members of the genus Arenaria mainly by having 4- rather than 5-petaled flowers.

一个矮生草本属，广泛分布于北半球的北温带地区和北极区；鹅不食；主要以其4-瓣而非5-瓣花与蚤缀属植物相区别。

In the context of the TOMS data,investigated are atmospherical total ozone secular trends (1979～1992),interannual changes as well as seasonal and periodic variations over Arctic and Antarctic.

利用TOMS资料分析了南北极区大气臭氧总量的多年（1979～1992）趋势变化、年际变化、季节变化及周期性变化特征。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。