backspin servebackspin service发: hair下旋球: back spin; back/under spin; backspin underspin; backspinn; draw; underspin下旋球（后旋球）: back spin发下旋场球: long backspin service发下旋短球: short backspin service下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:发下旋球，即可在微信中查询翻译
