n.下降;（力量、健康、品格、权力、价值等的）衰退;下倾;（人、生命等的）衰退期;vt.辞谢，谢绝（邀请等）;vi.（道路、物体等）下倾;（太阳）落下;（在品格、价值上）降低;衰落，谢绝...

上升：increasing；rising；ascending；flourishing下降：decreasing；falling；descending；downward3、副词上升：increasingly；ascendingly；improvingly；upward下降：decreasingly；descendingly；declinglydownward4名词上升：in...

decliningpopulation是生态学“下降的人口中”中固定搭配。declined做定语时表“拒绝的“的意思，declining做定语时表”下降，衰减的“的意思。

解析:B,此处为连词,意思是“正在这时,(突然)”。请参考高一人教版教材Unit1的一句话:OnedayChuckisonaflightacrossthePacificOceanwhensuddenlyhisplanecrashes.32.Someaspeetsofapilot’sjob___beboring...

2、形容词上升：increasing；rising；ascending；flourishing下降：decreasing；falling；descending；downward3、副词上升：increasingly；ascendingly；improvingly；upward下降：decreasingly；descendingly；declinglydownward4...

下降：decreasingly；descendingly；declinglydownward。4、名词。上升：increase；rise；ascent；improvement。下降：decrease；fall；descent；decline。词语用法：rise的基本意思是指空间位置的上升运动，引申可指数量、价格、需求...

下降：decreasingly；descendingly；declinglydownward。4、名词。上升：increase；rise；ascent；improvement。下降：decrease；fall；descent；decline。词语用法：rise的基本意思是指空间位置的上升运动，引申可指数量、价格、需求...

2、形容词上升：increasing；rising；ascending；flourishing下降：decreasing；falling；descending；downward3、副词上升：increasingly；ascendingly；improvingly；upward下降：decreasingly；descendingly；declinglydownward4...

2、形容词上升：increasing；rising；ascending；flourishing下降：decreasing；falling；descending；downward3、副词上升：increasingly；ascendingly；improvingly；upward下降：decreasingly；descendingly；declinglydownward4...

2、形容词上升：increasing；rising；ascending；flourishing下降：decreasing；falling；descending；downward3、副词上升：increasingly；ascendingly；improvingly；upward下降：decreasingly；descendingly；declinglydownward4...