Weird Butterfly Ceremony

NRZI編碼：翻轉不歸零制，是2進制信號，應用在CD、USB及100 BASE FX。

曼徹斯特編碼：又叫做相位編碼，是1個同步時鐘編碼技術，常用於區域網路傳輸。

差動式曼徹斯特編碼：有跳變為1，沒跳變為0。

課文：

One gripping part of a rugby game is the scrum. Requiring exceptional teamwork, a scrum restarts play during a match. The forwards from each team link themselves together. Forming this ball of humanity takes a special technique. Once the players are in place, they push the other team backward and kick at the ball to get possession of it. A team gains possession when the ball gets to the back of a scrum. The intensity of the strength displayed is impressive. At international competitions, each team exerts three and a half tons of pressure on the opposing team!

grip：引人入勝、吸引

「ソードアート・オンライン」ED1－ユメセカイ
歌：戶松遙　作詞：古屋真　作曲：南田健吾　編曲：古川貴浩

課文：

The crowd cheers and shouts as two 15-man teams take the field. Their goal? To carry or kick a ball over their opponent’s try line. The game looks like a mixture of soccer and American football. In this rough-and-tumble sport, players carry the ball, kick the ball and tackle one another. Men play it; women play it; and so do children. In fact, played in more than 120 countries, rugby is tremendously popular!

take the field：上陣、開戰

課文：

The first sneaker I ever wore was an all-white shoe that was perfect for tennis, physical education classes and many other activities. While the shoe might have been practical, it was certainly not a fashion item. But sneakers have come a long way since then!

practical：實際的、實踐的、實用的（= useful）