vi.摇摆,振荡,波动,犹豫
She is vacillating between hope and fear.
她一会儿充满希望一会儿深怀恐惧,如此反复不已.
Modern character is inconstant, divided, vacillating.
现代人的个性是无常的, 分裂的, 摇摆不定的.
A vacillating person finds it hard to make up his mind.
优柔寡断的人不易下决心.