mesosere

例句：

1. 1. The spider spun a mesothread around the fly's leg.
   蜘蛛在苍蝇腿上绕了一条中丝线。
2. 2. The artist used a mesothread to create the intricate pattern on the fabric.
   艺术家使用一条中丝线在织物上创作了复杂的图案。
3. 3.The mesothread was so fine that it could hardly be seen by the naked eye.
   这条中丝线非常细，肉眼几乎看不见。