Correct

可伸缩

/ kě shēnsuō /
Strokes

Example

As an Adjective

extendable; expandable

1
shēnsuō
伸缩
wànxiàngjiē
万向节

universal extensible joint

2
shēnsuō
伸缩
tiānxiàn
天线

retractable antenna

3
shēnsuō
伸缩
zi
梯子

extendable ladder