tune a system or circuit / tune a musical instrument

tuning (the adjustment of a system or circuit to secure optimum performance) / tuning (the calibration of a musical instrument to a standard pitch)

Zhuyin fuhao; Zhuyin; bopomofo

Ho Chi Minh (Vietnamese communist revolutionary leader) / Ho Chi Minh, Ho Chi Minh City (largest city of Vietnam)

Blagoveshchensk (a city in Russia)

bathyscaphe (self-propelled deep-sea submersible)

When making a mistake, do not be afraid to correct it. Be quick to amend one's wrongs.

costume

nighttime, the night, the period of time during the night

polytetrafluoroethylene