用but描写地理英文

qiantang river bore no grand-looking in the world but the qiantang river tide on august 18th."the extraordinary surging tide of the qiantang river is a world-renownednatural wonder caused by the gravitation of the celestial body, the centrifugalforce produced by the rotation of the earth and by the peculiar bottleneckshape of the hangzhou bay.to the east of zheshan hill on the south bank of qiantang river, there are about500,000 mu reclaimed-land like a peninsula to keep off the river mouth, so as tomake from the hill to the outside 12th section like a large-sized bottle with a smallmouth. it is easy for the tide to come, but difficult to ebb. hangzhou bay\'s widthis over 100km, but up to the outside 12th section is narrowed only several kilometers.however, the river east part of the riverbed is sharply raised. in this way, it becomesthe riverbed high and water a little. as a great quantity from the qiantang river mouthis reaching, the tide cannot be raised equally due to narrowed-down river area. then, it isforced rear tides pushing front tides while the front tide is not fast enough, thus, one uponanother, forming the most magnificent natural phenomenon in the world.on the 18th day of the