...As soon as possible Ileft the glacier for the hillside, and though that was laborious enough in allconscience, yet it enabled me to steer a straight course... 
John Buchan 「Mr. Standfast」
...I wastherefore at different times unable to manage the canoe, for thepaddling was very laborious...
Olaudah Equiano 「The Interesting Narrative of the Life of Olaudah Equiano, Or Gustavus Vassa, The African」
... They would not part with children for clothing or beads, but agriculture with wooden hoes is so laborious, that the sight of the hoes prevailed...
David Livingstone 「Missionary Travels and Researches in South Africa」
...The process of washing is very laborious and tedious...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Our course up the river was slow and laborious...
Samuel White Baker 「In the Heart of Africa」
...I owe much to their kindness, and can bear cheerful testimony to the laborious, self-devoting spirit in which they do their duty...
Horatio Bridge 「Journal of an African Cruiser」
...In this laborious work, I have collected many interesting facts which I shall share with my friends and the public as soon as I have leisure...
P. J. Proudhon 「What is Property?」
... Doubtless the man really believed that but for the laborious days that bird-catchers spend lying on the grass, the human race would be very badly off...
W. H. Hudson 「Birds in Town and Village」
...It is, in a way, the history of many of us; not odiousscoundrels worthy of eternal torments, but worthy and laborious folk,useful to their neighbours...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Two hours and more are spent in this laborious stripping...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...It is only in the boring of the galleries, the most laborious part of the work, that economy can occasionally be exercised by a piece of luck...
J. Henri Fabre 「Bramble-bees and Others」
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