汝係毋係知道“cathodic protection”仰般發音？
cathodic protection還無任何發音:

• 幫cathodic protection錄製發音 cathodic protection   [en - uk]
• 幫cathodic protection錄製發音 cathodic protection   [en - usa]
• 幫cathodic protection錄製發音 cathodic protection   [en - other]