...Billsighed as he told himself that poor Jess's chances were problematical... 
A. J. Dawson 「Finn The Wolfhound」
...The conduct of these second and third migrations will be far more rash, and their future more problematical...
Maurice Maeterlinck 「The Life of the Bee」
...And yet its successful rearing is henceforth highly problematical...
J. Henri Fabre 「More Hunting Wasps」
...How long I shallremain is problematical, as I have not yet completed myinvestigation of the Lepidoptera of tropical countries...
Lucy Foster Madison 「Bee and Butterfly」
...The sea-breeze, which had blown steadily all summer, wasgone, and in its place were capricious winds and murky skies whichmade the time of arriving anywhere extremely problematical...
Jack London 「Tales of the Fish Patrol」
...Itseems still problematical what this object may be...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
...But the massive Cyclopeanwalls of Argos evidently show the Pelasgic origin of the place,in opposition to the traditionary Phoenician origin of Inachus,whose very existence is quite problematical...
Marcius Willson 「Mosaics of Grecian History」
...Religion teaches theindividual to place all hope, all desire, in a problematical hereafter...
Dr. D.M. Brooks 「The Necessity of Atheism」
...Smallsheets of water were seen in the creek as we passed along, but whetherthey existed before the late rains is very problematical...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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