Examples:
他長期以來壹直努力解決該問題。
He has been grappling with the problem for a long time.
長期以來，人類壹直在同無情的自然力作鬥爭。
Man has struggled long against the brute forces of nature.
那位老太太長期以來身體不好。
That old woman has long been in poor health.
冬眠長期以來壹直引起生物學家的興趣
Hibernation has long intrigued biologists.
他們長期以來在工黨中就是戰友。
They'd long been comrades - in - arms in the Labour Party.
她的工作長期以來太不受重視了。
Her work has been too much ignored for too long.
他長期以來壹直努力解決該問題。
He has been grappling with the problem for a long time.
長期以來，我們對他玩忽職守的行為熟視無睹。
We have long enough turned a blind eye to his negligence of his duties.
他說他長期以來壹直在想這件事。
He said he's been thinking about if for ages.
專家們長期以來壹直關心著世界人口的增長。
Experts have long been concerned about the growth of population in the world.
我們長期以來壹直支持綠黨保護生態環境的目標。
We have long sympathized with the aims of the Green Party.
我們長期以來壹直支持綠黨保護生態環境的目標。
We have long sympathize with the aim of the green party.