diff --git a/tools/translation/align.py b/tools/translation/align.py
index d72160d..bc36b7e 100644
--- a/tools/translation/align.py
+++ b/tools/translation/align.py
@@ -880,6 +880,25 @@ def build_delivery(
         for alignment in alignments:
             paragraph = bundle_ids.get(alignment.paragraph_id) or {}
             sources = {source.source_id: source for source in source_utterances(paragraph, bundle)}
+            if alignment.method == "mismatch":
+                # The paragraph's translation could not be trusted - it
+                # renders another paragraph. The utterances still get a row,
+                # marked as not voiced and carrying the reason, so the gap is
+                # visible in the review lane and says why. Silence would be
+                # indistinguishable from "never translated".
+                reason = "; ".join(alignment.problems) or "the translation could not be verified"
+                for source in sources.values():
+                    if source.row_id is None:
+                        continue
+                    utterances.append(
+                        {
+                            "utterance_id": source.row_id,
+                            "voiced": False,
+                            "reason": reason,
+                            "source_ref": source_ref or alignment.paragraph_id,
+                        }
+                    )
+                continue
             for segment in alignment.segments:
                 source = sources.get(segment.source_id)
                 if source is None or source.row_id is None:
diff --git a/tools/translation/tests/test_align.py b/tools/translation/tests/test_align.py
index 5ff5157..cd59784 100644
--- a/tools/translation/tests/test_align.py
+++ b/tools/translation/tests/test_align.py
@@ -333,6 +333,28 @@ class DeliveryTests(unittest.TestCase):
         self.assertIn("absorbed", collapsed[0]["reason"])
         self.assertNotIn("text", collapsed[0])
 
+    def test_an_unverifiable_paragraph_is_delivered_as_a_visible_gap(self) -> None:
+        """The row is kept and says why, rather than vanishing.
+
+        A delivery that simply omits the utterances is indistinguishable
+        from one that was never translated. The review lane needs to see the
+        gap and its reason.
+        """
+        alignment = align_paragraph(paragraph_fixture(), "这艘船很大。设计师很用心。", bundle_fixture())
+        alignment.method = "mismatch"
+        alignment.segments = []
+        alignment.problems = ["translation belongs to another paragraph: it renders the next one"]
+        delivery = build_delivery(
+            {"target_language": "zh"},
+            [({"id": "ch-1", "paragraphs": [paragraph_fixture()]}, [alignment])],
+            bundle_fixture(),
+        )
+        self.assertEqual(len(delivery["utterances"]), 2)
+        self.assertTrue(all(not u["voiced"] for u in delivery["utterances"]))
+        self.assertEqual([u["utterance_id"] for u in delivery["utterances"]], [100, 101])
+        self.assertIn("another paragraph", delivery["utterances"][0]["reason"])
+        self.assertNotIn("text", delivery["utterances"][0])
+
 
 class CommandTests(unittest.TestCase):
     def test_the_cache_directory_is_created_before_the_first_call(self) -> None: