[請益] 關係代名詞to which

[lerik04 (simple life)]

請問這個句子The man says they are having trouble keeping up with orders, to which the woman asks what the holdup is. 拆解成以下兩句是否正確？

1. The man says they are having trouble keeping up with orders.
2. The woman asks what the holdup is to keep up with orders.

我的理解是which指的是”keep up with orders”。
若有錯誤請指正，謝謝。
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