He felt himself unworthy of so great a love, and felt he owed her a low bow.
他感到自己配不上这么伟大的爱，感到自己欠了她一个深深的鞠躬。
A ceremonious act of deference or obeisance, especially a low bow performed while placing the right palm on the forehead.
表示恭敬的礼节性动作或深深地鞠躬，尤其是深鞠躬同时置右掌于额上。
So, lifting your head disturbs the bow wave - it's a vicious circle. Instead of doing this, trust the pocket to be there and keep your head low.
因此，抬头会扰动涡流-这是一个恶性循。代替它的是，相信口袋的存在并保持较低的头部位置。
There are two distinct classes of centralizers. The older and more common is a simple, low-cost bow-spring design.
有两大类扶正器：有一种使用时间长，且比较普遍、简单、成本低的弓型弹簧设计的扶正器。
There are two distinct classes of centralizers. The older and more common is a simple, low-cost bow-spring design.
有两大类扶正器：有一种使用时间长，且比较普遍、简单、成本低的弓型弹簧设计的扶正器。
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