2 sentences

1. 伽马射线具有极强的穿透力。

   gā​mǎ shè​xiàn jù​yǒu jí qiáng de chuān​tòu​lì.

   Gamma rays have extremely high penetrating power.

   Source: Dong Chinese Dictionary

2. 这种医疗仪器可以发射出微弱的伽马射线。

   zhè zhǒng yī​liáo yí​qì kě​yǐ fā​shè chū wēi​ruò de gā​mǎ shè​xiàn.

   This medical device can emit weak gamma rays.

   Source: Dong Chinese Dictionary