He taught himself the harmonica, banjo and guitar, sometimes building the instruments out of materials he found.

他自学了口琴、班卓琴和吉他，有时还用自己找到的材料制作乐器。

youdao

To coordinate technology and equipment guarantees for national coal mine safety; organize safety supervision for the application of equipment, materials, and instruments and meters by the coal mines.

协调全国煤矿安全技术装备保障工作，组织对煤矿使用的设备、材料、仪器仪表的安全监察工作。

youdao

With the renewal of advanced instruments and means, it is necessary that breakthroughs be made in researches on wood-based carbonized materials.

随着先进的检测仪器与手段的日益更新，对木炭的研究实有必要更上一层楼。

youdao

They can afford to equip their tinkerers and visionaries with the most advanced materials, instruments, and knowledge, and the result has often been a superior capacity for innovation.

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