For straight holes, bow spring centralizers are sufficient and commonly used.

对于直井，弓型弹簧扶正器足以满足上述功能，并被通常使用。

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Keep your back straight, head up and turned towards the target, and straighten your bow arm, but keep the elbow unlocked.

保持背部的挺直，头转向目标，伸直你的持弓臂，同事保持肘部的放松。

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As a result, bow guns and after guns can fire straight and sideways, while central turrets can only fire sideways.

这样的结果是弓枪和尾炮可以向四周开火，而中心的炮塔只能侧身射击。

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Strachan, who missed out on a fourth straight Scottish title on the final day of the league season last weekend, took a bow and received a warm round of applause from the Celtic fans before the charity match.

BBC: Strachan return for Burns tribute