气球国防
以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译
?放高球防守
... back-spin stroke 下旋球 balloon defence 放高球防守 ball projection 抛球 ...
One of the first examples was the Red Balloon Challenge, staged in 2009 by DARPA, the research arm of the American Department of Defence.
ECONOMIST: Monitor
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。