【TED】マーク・ケンドール：より安全で安価な針なしワクチンパッチのデモ (【TED】Mark Kendall: Demo: A needle-free vaccine patch that's safer and way cheaper (Mark Kendall: Demo: A needle-free vaccine patch that's safer and way cheaper))┃VoiceTube 動画で英語学習
【TED】マーク・ケンドール：より安全で安価な針なしワクチンパッチのデモ (【TED】Mark Kendall: Demo: A needle-free vaccine patch that's safer and way cheaper (Mark Kendall: Demo: A needle-free vaccine patch that's safer and way cheaper))
