以下为句子列表：
英文: When you do verticle sculling you want to make sure you're straight up and down, your head isn't forward and your head isn't back, you bind the line because this also simulate the freestyle position that you should be in.
中文: 当你立式拨水时，你要确保直上直下，头既不向前也不向后，你保持直线，因为这是模仿自由泳的正确姿势。
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