It is not allowed to repair by normal ways when construction defects happened to some old concrete engineering or new-built ones, eg pavement, bridge, tunnel, etc.

有些老混凝土工程或新建混凝土工程出现施工缺陷，客观条件下不允许按常规方法修补，如公路路面、桥梁、隧道等。

youdao

To this question, my answer would be something like this: "I'll develop a strong specialization, preferably in something highly technical (eg engineering)."

我的答案大概会是这样：“要学有专长，最好是在高技术领域（譬如工程学）。

youdao