graving dock 干船坞
graving dry dock 干船坞
dock graving
码头雕刻
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It is also the centenary of the opening of the Thompson Graving Dock, where the ship was built, on 1 April 1911.
BBC: Titanic centenary launched with R J Welch exhibition
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