perennially

adv.

经常出现地；长期地；持久地；永久地

1. Something that remains perennially fresh, interesting, or well liked.
   经久不衰的事物常新的、百看不厌的或永保美名的事物
2. Permanently frozen subsoil, occurring throughout the Polar Regions and locally in perennially frigid areas.
   永冻土永久冰冻的下层土壤，出现在整个北极地区和部分长期寒冷的地区

Thickness of ice on perennially frozen lakes
Perennially Frozen Peatlands in the Western Arctic and Subarctic of Canada
Oxygen Budget of a Perennially Ice-Covered Antarctic Lake
Carbon Transformations in a Perennially Ice-Covered Antarctic Lake
Diversity and expression of RubisCO genes in a perennially ice-covered Antarctic lake during the polar night transition
Diatoms in sediments of perennially ice-covered Lake Hoare, and implications for interpreting lake history in the McMurdo Dry Valley...
Bio-optical characteristics of the snow, ice, and water column of a perennially ice-covered lake in the High Arctic
Fall armyworm, Spodoptera frugiperda (J. E. Smith), and corn earworm, Helicoverpa zea Boddie, perennially cause leaf and ear damage ...
PHOTOSYNTHESIS-IRRADIANCE RELATIONSHIPS IN PHYTOPLANKTON FROM THE PHYSICALLY STABLE WATER COLUMN OF A PERENNIALLY ICE-COVERED LAKE (...
Seasonal Variations In Isotopic Composition and Deep-Water Fluxes of the Tests of Perennially Abundant Planktonic Foraminifera of th...