吸烟是许多人难以戒掉的常见恶习。
Smoking is a common ___vice that many people struggle to quit.
他唯一的缺点是爱咬指甲。
His only ___vice is biting his nails.
木匠用台钳固定住木板以便切割。
The carpenter used a ___vice to clamp the wooden board for cutting.
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