to the backbone

基本解释

They are British to the backbone, of course, but their father was German, which is why they care for literature and art.
烿然，他们是英国人，但是他们的父是德国人，这也是他们怿注文和艺术的原因。
Dragon wings are usually depicted in one of two ways—a third pair of limbs connected to the backbone, or webbed forearms.
对龙翼的描述基本上有两种-一对连接在脊椎上的第三肢，或者是蹼状的前肢。
Aunt Juley: All the Schlegels are exceptional. They are British to the backbone, of course, but their father was German, which is why they care for literature and art.
茱丽姨妈：所有施莱格尔家族的人都是例外。烿然，他们是英国人，但是他们的父是德国人，这也是他们怿注文和艺术的原因。

Prime Minister Michele Duvivier Pierre-Louis told the council that her government is committed to fixing Haiti's problems and creating a strong economy as its backbone.
This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.
做听力练习时我们必须使用这些材料,听力训练是课程的核心内容
耶鲁公开课 - 聆听音乐课程节选
One thing to notice is this part of the double helix that we'll call the backbone.
要注意的是,这两股构成双螺旋的链我们称之为主链
耶鲁公开课 - 生物医学工程探索课程节选

Conversely, Amazon EC2 is always connected to the backbone of the internet where round-trip latency is 5 milliseconds or less to most web sites rather than the 100 milliseconds seen over wireless connections.
ENGADGET: Amazon Silk browser spins a faster mobile web, courtesy of cloud servers (video)