uphill transport的意思|示意

Active transport The use of energy to move a solute across a membrane against a concentration gradient, a potential gradient, or both (electrochemical potential) . Uphill transport.

主动吸收：亦称代谢吸收。指细胞直接利用能量做功，逆着电化学势梯度吸收离子的过程。

PERSUADING drivers to give up their cars in favour of public transport has always been an uphill struggle.

说服司机放弃私驾改选公共交通实在是一项艰巨之工作。

Expanding transport routes is the planners' solution, but they face an uphill battle.

扩张交通线路是成都规划者们提出的解决方案，但他们将面临艰巨的挑战。