The document said the largest swarm of such boats observed was 40, but that in a wartime attack, up to 100 could be used, coming at all angles.是什么意思_The document said the largest swarm of such boats observed was 40, but that in a wartime attack, up to 100 could be used, coming at all angles.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句