The vessels are taken over by armed pirates and then forced to sail to an unknown destination, where the cargo is discharged into a smaller tanker, and then the vessel is brought back and released.
船只被持有武器的海盗劫持，被迫驶向未知的目的地，货物被分装到小一些的油轮，然后，船只被带回并获释。
The test shows that the non-equality and unknown stress distribution of weld joint, which can be promoted by extra-load, is the key to make sure the steel pressure vessel for safety.
结果表明，焊接接头的应力不均匀性和不确定性是影响钢制压力容器安全性的关键，采用加载法可以有效地改善这种非均匀应力分布状况。
Hemangioma is one of the benign blood vessel proliferative tumors in children, but the mechanisms of proliferation and regression are unknown.
血管瘤是一种小儿常见的良性血管增生性肿瘤，但其增生、消退机制不明。
Hemangioma is one of the benign blood vessel proliferative tumors in children, but the mechanisms of proliferation and regression are unknown.
血管瘤是一种小儿常见的良性血管增生性肿瘤，但其增生、消退机制不明。
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