详细解释:a. 坦白的, 率直的, 老实的
vt. 免费邮寄
n. 免费邮寄特权
【经】 免费通行, 特许自由出入, 免费邮寄
词型变化：
名词:frankness形容词比较级:franker最高级:frankest动词过去式:franked过去分词:franked现在分词:franking第三人称单数:franks英语解释：
名词 frank:
a member of the ancient Germanic peoples who spread from the Rhine into the Roman Empire in the 4th centurya smooth-textured sausage of minced beef or pork usually smoked; often served on a bread roll同义词：frankfurter, hotdog, hot dog, dog, wiener, wienerwurst, weenie