A Hardness Tester sometimes works.

A Hardness Tester sometimes works. But sometimes it’s doesn’t work because the internal signal cable is missing.

ผลลัพธ์ (อังกฤษ) 2:

硬度计有时也能工作。但有时它不起作用，因为内部信号电缆不见了。

ผลลัพธ์ (อังกฤษ) 3:

A difficult tester sometimes works. But sometimes it doesn't work because the internal signal cable is lost.