three-carrier attachment

例句：

1. 1.This camera has a three-legged attachment that allows for easy handling.
   这台相机有一个三脚架附件，可以方便地使用。
2. 2.The scientist attached a three-legged attachment to the robot arm to improve its stability.
   科学家给机器人手臂装上了一个三脚架附件，以提高其稳定性。
3. 3.During the experiment, the scientist attached a three-legged attachment to the sample to measure its weight.
   实验期间，科学家将一个三脚架附件连接到样品上，以测量其重量。