arduous

• adj.努力する；奮闘する；背信的な

語源はわずか。この語の意味は語源のarduousに影響されている。

arduous

arduous: [16] Latin arduus, the source of English arduous, originally meant ‘high, steep’ (it is related to Greek orthós ‘straight, upright, correct’, as in English orthodox); the sense ‘difficult, laborious’ was a later metaphorical development. (The word has no connection with ardour, which comes ultimately from Latin ardēre ‘burn’; see ARSON.)
=> orthodox

arduous (adj.)

1530s, "hard to accomplish, difficult to do," from Latin arduus "high, steep," also figuratively, "difficult," from PIE root *eredh- "to grow, high" (see ortho-). Literal sense of "high, steep, difficult to climb," attested in English from 1709.

1. an arduous journey across the Andes

アンデス山脈を越える苦難の旅

2.Take your ease，for the journey ahead will be long and arduous .

ゆっくり休んで、前の道のりは遠くて難しいですね.

3.The refugees made an arduous journey through the mountains.

難民たちは困難にも高い山を越えた。

4.The task is ardous ; besides，there 's not much time.

タスクは困難であり、同時に時間が迫っている。

5.We must have patience in doing arduous work.

私たちは苦しい仕事をするには忍耐力が必要です。