不可能会无缘无故地陷下去
“It can't just sink for no reason.”
THE DIALOGUE REEL
“Its foundation should be firm.”
不可能会 无缘无故地 陷 下去
“It can't just sink for no reason.”
除非
“Unless...”
“Someone definitely did this on purpose; it couldn't just collapse on its own.”
In Chinese narrative conventions, stating that something cannot occur without cause immediately shifts the premise toward human deception or an orchestrated conspiracy.
LEARNING CHUNKS & PARTICLES
impossible / cannot be
Used to express strong disbelief or logical impossibility.
for no reason at all / out of the blue
A frequent four-character idiom emphasizing that something lacks any logical or causal explanation.