她成功地使他在危机时刻的坚韧性受到怀疑。
She has raised doubts about his toughness in times of crisis.
春天是暂时的天堂，阳光使人变得坚韧有力。
The springtime is a provisional paradise, the sun helps man to have patience.
学生们猛击树干使手部变得坚韧，蹲站在其他同学的肩膀上强化腿部力量。
They jab tree trunks to toughen their hands and practice squatting with other students sitting on their shoulders to build leg strength.
应用推荐