...The magical effect of knots in trammelling and obstructing humanactivity was believed to be manifested at marriage not less than atbirth... 
Sir James George Frazer 「The Golden Bough」
..." Theyworked their way desperately through the rubbery, obstructing growth...
Various 「Astounding Stories of Super-Science, June, 1930」
...The country was red sandstone,open, and devoid of all timber, till, descending again into a valley,the path crossed an obstructing ridge, and led us with pleasant surpriseinto a beautiful park...
George Ernest Morrison 「An Australian in China」
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