inexhaustible
US
UK inexhaustible adj: (supply: that cannot be used up)
SC 用不完的 yòng bù wán de
SC 用不尽的 yòng bù wán de，yòng bú jìn de
Solar power is an inexhaustible supply of energy.
inexhaustible adj: (person: never tired)
SC 不知倦的 bù zhī juàn de
SC 不知疲倦的 bù zhī juàn de，bù zhī pí juàn de
The inexhaustible runner won every race.