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The tower of Pisa is the bell tower of the cathedral of Pisa in Tuscany, Italy. It leans because when the building was half completed, the soil under one half of the circular structure began to subside and the tower tipped. Work on the tower was begun in 1173, but was discontinued for a century after the subsidence. However, in 1275, architects devised a plan to compensate for the tilt. Two stories, the third and the fifth, were built out of line with the others and closer to the vertical in an effort to alter the tower’s center of gravity. But the leaning has continued to increase gradually throughout the centuries. Pumping to keep water away from the surrounding ground and the injection of cement grout into the foundations and the surrounding subsoil have been tried in recent years, but without success. The tower, which is one of the most unusual in existence, is Romanesque in style and made of white marble. It is cylindrical in shape and has eight stories. The tilt is about 17 feet, or more than five degrees, from the perpendicular. The tower continues to increase its tilt by about a quarter of an inch each year.
張莉莉 Senior 32st (2011/10/31 11:22):
Claire Pan Senior 22st (2012/02/06 16:58):
Jasper Huang Senior 31st (2012/03/19 10:01):
pester 煩擾, 糾纏[(+for/with)]
=to annoy or bother (someone) in a repeated way
The beggars pestered the tourists for money.
subside 退落; 消退; 消失
=to become less strong or intense
The pain/swelling will subside in a couple of hours.
from Webster learner\'s dictionary.
羅逸昇 University 11st (2013/05/01 22:48):