1 variant: 背 bēi

1 knapsack

2 rucksack

3 infantry pack

4 field pack

5 blanket roll

6 classifier: 个 gè

1 to betray

1 rear view

2 figure seen from behind

3 view of the back (of a person or object)

1 behind

2 at the back

3 in the rear

4 behind sb's back

1 lit. unable to distinguish eldest brother from second brother (idiom); they are all equally excellent

2 nothing to choose between them

1 arms around each other's shoulders (idiom)

1 lit. there are many swift horses, but very few who can spot them (idiom)

2 fig. many have talent, but few can recognize talent when they see it

1 lit. both the palm and the back of the hand are made of flesh (idiom)

2 fig. to both be of equal importance

3 to value both equally

1 lit. to strangle the front and press the back (idiom)

2 fig. to occupy all key points (military)