List: HSK 5

1. astronomy

occasionally, once in a while, from time to time

1. trouble, bother, disturb
2. perplexed, puzzled

1. escape, flee, run away

1. allergic
2. allergy
3. hypersensitive

1. ear
2. to listen

unique, distinctive, characteristic

1. knock on a door
2. tap, rap

build, construct, erect

1. stay, remain, linger
2. pause, halt temporarily