lián​suǒ HSK7

interlock

连锁 (連鎖) lián​suǒ
interlock expression
to be linked together or interconnected in a sequence or series

This chemical reaction will trigger a chain reaction.

chain noun
a series of businesses such as stores or hotels under the same brand or ownership

Frequency

Movie subtitles
3.91 per million appears in 2% of films
Written text
20.3 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT