戒備森嚴 (gaai3 bei6 sam1 jim4) — heavily-guarded in Cantonese
gaai˗₃戒beiˍ₆備samˉ¹森jimˎ₄嚴简 戒备森严
Mandarin Pinyin: jie4 bei4 sen1 yan2
Meaning of 戒備森嚴
nounheavily-guarded
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