a ship before china
中国之前的一艘船
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Before being allowed to board a ship in China, however, they had to prove that they were going to their own free will and were under no labor contract.
然而，在中国，被允许上船之前，他们必须证明自己是自愿走的，并不是受劳动合同的约束。
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