"Z16781" pán-pún chi-kan bô-kāng--ê tē-hng

2024年6月26日（拜三）03:27 ê siu-tēng-pún

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@@ Tē 95 chōa: / Tē 95 chōa: @@
                     "charges attract",
                     "attractive charges",
-                    "electrostatic attraction"
+                    "electrostatic attraction",
+                    "are opposite signs",
+                    "opposite signs"
                 ]
             }