旅行时带着两个孩子和一个沉重的手提箱，真是寸步难行。
Travelling is difficult when you're encumbered with two small children and a heavy suitcase.
陌生人松了一口气，递给约瑟芬一个商业名片和一个沉重的棕色箱子。
Relieved, the stranger handed Josephine a business card and a heavy brown case.
一个沉重的背包迫使肌肉和脊椎来平衡那些不均的重量。
A heavy backpack forces the muscles and spine to balance the unequal weight.
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