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to phrases
all trunk busy
telecom. 中继线全忙
all trunks busy
avia. 全部占线
busin. 线路全部占线
el. 全部中继线忙; 中继线全部占线
IT 所有中继线忙
tech. 占线; 中继线全忙
all trunk busy
: 2 phrases in 2 subjects
General1
Telecommunications1