...The duty of working for the Wall StreetFarmer had added tenfold to the natural tendency... 
Albert Payson Terhune 「Lad: A Dog」
...When the sand accumulated so much behind him as to impede his motions he scraped it out of his way, and set to work again with tenfold earnestness...
R.M. Ballantyne 「The Dog Crusoe and his Master」
...SirHarry's hiccup, from which he was never wholly free, increased tenfold, andhe hiccuped and spluttered at almost every word...
R. S. Surtees 「Mr. Sponge's Sporting Tour」
ランダム例文：
inhabitants slobbers regret
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