3.Some people blame the smart phone for the tragedy, yet in fact people's weakening self-control and self-discipline are to blame.
一些人把悲剧归咎于智能手机,然而事实上,人们自制力和自律性的减弱是罪魁祸首。
4.Their massive wake creates waves at the bottom of the sea, weakening the foundations of the centuries-old buildings themselves.
它们巨大的尾流在海底形成浪潮,损坏了有数百年历史的建筑本身的地基。