单词 投掷者 例句 DEFINITIVE EXAMPLES 权威例句〔boomerang〕A flat, curved, usually wooden missile configured so that when hurled it returns to the thrower.回飞镖:一种平的、弯的,通常是木制的飞镖,当投出去后能回到投掷者手中美国传统〔co-operation〕The poli...