探针 (tànzhēn): probe

Measure Word

一根探针 gēn

医生用探针检查伤口。

Yīshēng yòng tànzhēn jiǎnchá shāngkǒu.

The doctor used a probe to examine the wound.

太空探针已飞出太阳系。

Tàikōng tànzhēn yǐ fēichū tàiyángxì.

The space probe has flown out of the solar system.

这个探针可以测量温度和湿度。

Zhège tànzhēn kěyǐ cèliáng wēndù hé shīdù.

This probe can measure temperature and humidity.

memory

Think of 探 (to probe/explore) + 针 (needle) — a needle for probing. The same characters describe both a medical probe and a space probe.

探 tàn

针 zhēn