简可以一下子把准确的数量告诉你。
Jane can tell you the correct amount off the top of her head.
当然,那个数字只是估计,没人确切知道准确的数量。
That figure, of course, is just an estimate-nobody really knows exactly how many.
可是你牺牲了灵活性,你必须去知道准确的数量,生命周期和对象类型当你在写程序的时候。
However, you sacrifice flexibility because you must know the exact quantity, lifetime and type of objects while you're writing the program.
Some scholars have pointed out that in Book II of the Iliad in the section that we call, "The Catalog of Ships," The poet lays out just exactly how many warships came to Troy fromGreece, and just exactly how many came from each town.
有学者指出在《伊利亚特》第二卷,《船舶名录》这一章节中,诗人准确地列出了从特洛伊出发到希腊的,战舰的数量,而每个城镇又各有多少
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