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unshared electron
 unshared-electron
gen. 末共享 电子
| pair
 pair
el.mach. 线对
met.
oil ; 对 偶
roll. 双层轧制; 叠轧
sport. 一对; 一双

to phrases
unshared-electron
gen. 末共享〔价〕电子
unshared electron pair
: 4 phrases in 3 subjects
Space1
Technology2
Water resources1