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1·On his very first sky diving attempt, Oscar leapt from the plane and pulled the rip cord.

第一次尝试跳伞，奥斯卡跳出了飞机，拉开了曳索。

2·It is important in the production in coal mine that longitudinal rip of steel-cord belt which can make the serious loss.

皮带运输是煤炭生产中的重要环节，皮带撕裂会造成严重的损失。