But to make sure it could still generate enough power and be safely used, we checked its thickness with an ultrasound scan. We ended up replacing all 96 boiler pipes.
「鍋爐稍有腐蝕，為了確保鍋爐有足夠的動力並能安全使用，我們曾用超音波檢查鍋爐的厚度，並將九十六支鍋爐管全部換新。