...If I am not proficient enough, yet knowing the rudiments I can easily improve... 
Rafael Sabatini 「Scaramouche」
...The prehistoric Egyptians were also proficient in other arts...
L.W. King and H.R. Hall 「History Of Egypt, Chaldæa, Syria, Babylonia, And Assyria In The Light Of Recent Discovery」
...He became proficient in Italian and Greek, studiedmathematics, and read books on astronomy...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
ランダム例文：
hypocrisy dejected pleasurable
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