thumbing
vi. 翘起拇指请求搭乘（过路汽车）, 示意请求搭便车（thumb的现在分词形式）
发音
US
词形变化
thumbings
复数
thumbings
释义与例句
n.
-
1.
The act by which something is thumbed.
v.
-
1.
present participle and gerund of thumb