retaining circuit

例句：

1. 1. The new circuit design can effectively retain heat in the engine compartment.
   新的电路设计可以有效地在引擎舱内保留热量。
2. 2.The engineers carefully retained the circuit to ensure it functioned correctly.
   工程师们仔细地保留了电路，以确保它正常工作。
3. 3.The circuit was retained by a strong magnetic field, preventing it from being disrupted.
   电路被一个强大的磁场所保留，防止其被干扰。