a United States coin worth half of a dollar 同义词：fifty-cent piece,
Half dollar may refer to a half-unit of several currencies that are named "dollar". Normally, $1 is divided into 100 cents, so a half dollar is equal to 50 cents.
例句与用法
1.
I have a half dollar but no small coins 我有一枚五角硬币但没有更小的硬币。
2.
This is a very rare 1866 / 5 silver half dollar , even rarer than the 1867 half dollar , one the 10 rarities of the hong kong regal coinage 这是一八六五年改版为一八六六的半圆银币，非常罕有，比十大罕品中之一八六七半圆银币还罕有。
3.
A very auspicious start was made towards this end in 1866 when a range of five silver coins was struck , namely ten cents , twenty cents , half dollar and one dollar 它除了铸造以前由伦敦供应的法定一毫银币之外,新增铸了一元、半圆、一毫及五仙等银币。
4.
A very auspicious start was made towards this end in 1866 when a range of five silver coins was struck , namely ten cents , twenty cents , half dollar and one dollar 它除了铸造以前由伦敦供应的法定一毫银币之外，新增铸了壹圆、半圆、一毫及五仙等银币。
5.
She opened her purse and laid down a half dollar . he pretended not to notice it . hurstwood bought the flour - which all grocers sold in 3 1 2 pound packages - for thirteen cents and paid fifteen cents for a half - pound of liver and bacon 赫斯渥花了毛分钱买了一袋磅半的面粉-所有食品商卖的面粉都是这种包装，又花了毛分钱买了半磅肝和咸肉。
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