kana本身就是由两个字母组成的，即hiragana和katakana。
Kana is, itself, composed of two alphabets called hiragana and katakana.
他们的标志由上边的M和下边的B构成，这两个字母也组成了棒球手套的图形。
Their logo is actually made up of the letters M (on top) and B (below the m). These two letters also form a baseball glove.
每一个由国防部大型作战行动命名设备决定的作战代号名称，都是由两个字母构成一个字母群再使其组成“两个单词构成的系列代号”。
Each command within the vast Defense Department apparatus is given a series of two-letter groupings that they can use for their operations’ two-word sobriquets.
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