小口径的

例句：

1. 1. The small-caliber bullet was fired from a distance of 20 meters.
   小口径子弹从20米的距离发射。
2. 2. The engineer measured the diameter of the hole with a tape measure.
   工程师用卷尺测量了洞的直径。
3. 3. The small-caliber bullet hit the target squarely.
   小口径子弹正中目标。