brittle fibre

例句：

1. 1. The glass is so fragile that it shattered when I dropped it on the floor.
   这个玻璃太脆弱了，我把它从地上摔下来就碎了。
2. 2. The old tree was so brittle that it fell over in a storm.
   那棵老树太脆弱了，一场暴风雨就把它吹倒了。
3. 3. The rocks were brittle and could easily be broken by the wind.
   这些石头很脆弱，很容易被风吹断。