half基本解释
n,一半；半场；半学年,同近
Only half the guests had arrived by seven o’clock..7点钟前只来了一半客人。
一半；半场；半学年英释中释nexactly or about 50% (1/2) of an amount, time, distance, number etc
and a half,了不起的；而且比这多得多.短语
