... Population among the Boers increases rapidly; they marry soon, are seldom sterile, and continue to have children late... 
David Livingstone 「Missionary Travels and Researches in South Africa」
..." The plains adjacent to Loanda are somewhat elevated and comparatively sterile...
David Livingstone 「Missionary Travels and Researches in South Africa」
...If, however, the soil is sterile, how can marriage make it bearfruit? It is like the last desperate struggle of fleeting lifeagainst death...
Emma Goldman 「Anarchism and Other Essays」
...One strange variety has been described which always produces two sorts of flowers, the first double and sterile, the second single and fertile...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
... purpureus, and was probably fertilised by it, through the agency of insects (for these, as I know by experiment, play an important part in the fertilisation of the laburnum), the sterile hybrid C...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...that individual birds both with turbits and other breeds are occasionally sterile...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...risoria, and the latter laid many eggs, but all were sterile...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...A sterile cow is valueless, ofcourse, for any purpose except for beef...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The growth is then collected in sterile flasks andheated to a temperature of 60° C...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
... When the queen has become completely sterile, the bees will rear a certain number of royal princesses to fill her place...
Maurice Maeterlinck 「The Life of the Bee」
...There is an unique mother, there are sterile workers and males...
Maurice Maeterlinck 「The Life of the Bee」
ランダム例文：
intonations fielder disparaging
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