calibrating burette

例句：

1. 1. The engineer calibrated the machine before starting work.
   工程师在开始工作前校准了机器。
2. 2. The thermometer was calibrated to ensure accurate temperature readings.
   温度计被校准以确保准确的温度读数。
3. 3.Before using the new software, we need to calibrate it for accuracy.
   在使用新的软件之前，我们需要对其进行校准以获得准确性。