...“It’s a great life ifyou don’t weaken... 
John Buchan 「Mr. Standfast」
...Not to weaken my argument with too many general statements, let metake at once some concrete cases...
William T. Hornaday 「Our Vanishing Wild Life」
...Too frequent littering tends to weaken both themother and the little ones...
A. C. Smith 「The Raising and Care of Guinea Pigs」
...These injudicious performanceshave tended to weaken instead of strengthen thetower...
A. Hugh Fisher 「Bell's Cathedrals: The Cathedral Church of Hereford, A Description」
...Thus, to place whitebeside a colour is to heighten its tone; to set black beside a colour isto weaken its tone; while to put grey beside a colour, is to render itmore brilliant...
George Field 「Field's Chromatography」
...he body seemed to weaken suddenly in Bell's grip...
Various 「Astounding Stories of Super-Science, May, 1930」
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