Tolga Ulkan/unsplash。例句:I met a girl last week at a party who is Lily's double.有人说，在这个世界上每个人都有一个和自己很像的人。
如果咱们大家身边，经常有一些说话爱打马虎眼的人呢，我们就可以这样来表达:He gave us no real reasons， just the usual politician's double-talk.
System.out.println ); // 打印：3.5当然了，像BigInteger和 BigDecimal这种大数类的运算效率肯定是不如原生类型效率高，代价还是比较昂贵的，是否选用需要根据实际场景来评估。
例子:⑴There are seven times as many people as l expected.⑵ There are nine times more books in his bag than in yours.
a[eijart一(个，件....) afforde':dv有足够的(钱/时间)做(某事)abit(of)phr少量(的)，一点 afraid[e'freid]adj害怕的abit[e'bit]phr.一点儿 Africa[afrika]n非洲a bottle of]phr.
0 zero 1 one 2 two 3 three 4 four。表示价格划算:a good buy， a better buy， an excellent price， a good price/ bargain.
