jìrán língjiàn sǔnhuài le, jiù xūyào gēnghuàn.

Since the part is damaged, it needs to be replaced.

Breakdown of jìrán língjiàn sǔnhuài le, jiù xūyào gēnghuàn.

• 了le: change-of-state particle
• 就jiù: then
• 需要xūyào: to need

Questions & Answers about jìrán língjiàn sǔnhuài le, jiù xūyào gēnghuàn.

What does the pattern 既然...就... mean in this sentence?

既然...就... is a common pattern meaning since / now that ..., then ....

It presents:

• a situation that is already accepted as true: 既然零件损坏了
• the logical consequence or decision: 就需要更换

So the feeling is not just simple cause-and-effect, but more like:

• Since this is already the case, the next step is obvious
• Now that the part is damaged, it needs to be replaced

It often sounds slightly more logical or decisive than a plain because sentence.

Why is 就 used here?

In this pattern, 就 helps introduce the result or conclusion.

So:

• 既然 = since / now that
• 就 = then / therefore / in that case

It makes the sentence sound complete and natural. With 既然, using 就 is very common.

Compare:

• 既然零件损坏了，就需要更换。
  Since the part is damaged, it needs to be replaced.

Without 就, the sentence may still be understood, but it sounds less standard in this structure.

Why is there a 了 after 损坏?