For example, in Roman times, engineers discovered that if the upstream supports of a bridge were shaped to offer little resistance to the current of a stream or river, they would last longer.
例如，在罗马时代，工程师们发现如果桥的上游的桥墩建成对目前河流水阻力小的形状，桥墩的寿命会更长。
Although relatively few people were killed by Roman soldiers with their shorts swords or by medieval knights in their heavy armor, by modern times the carnage had become general.
尽管死在罗马士兵的短剑下或者笔者厚重铠甲的中世纪骑士手下的人相对较少，到了现代，战争造成的死亡数字越来越大。
[font=Times New Roman][color=#000000]Popular games in China typically feature elves, dwarves or characters that predate the past century of political turmoil.
[font=Times New Roman]中国流行的游戏爱用精灵、矮人等角色，要不就是几个世纪前乱世中的人物。
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