In geology, 'tectonic' describes the huge slow movements of the great plates that make up the surface of the Earth. You meet it most in the fixed phrases 'tectonic plates' and 'plate tectonics' (the whole theory, treated as a singular subject: 'plate tectonics is taught in junior high'). 'Tectonic activity' or 'tectonic movement' is what causes earthquakes and builds mountains — something Taiwan knows well, sitting where two plates press together.

In geology在地質學裡, 'tectonic' describes tectonic形容 the huge slow movements緩慢而龐大的運動 of the great plates that make up the surface of the Earth構成地球表面的巨大板塊。You meet it most最常見的是 in the fixed phrases固定用語 'tectonic plates' and 'plate tectonics''tectonic plates'（板塊）和'plate tectonics'（板塊構造學說） (the whole theory, treated as a singular subject整套理論當單數用: 'plate tectonics is taught in junior high''plate tectonics is taught in junior high'國中就會教板塊構造學說)。'Tectonic activity' or 'tectonic movement''Tectonic activity'或'tectonic movement'（板塊運動） is what causes earthquakes and builds mountains就是造成地震、堆出山脈的原因 — something Taiwan knows well台灣對這個很熟悉, sitting where two plates press together因為正好坐落在兩個板塊互相擠壓的地方。

Outside science, the word has a second life in the phrase 'a tectonic shift', used about politics, business, or society to mean a change so deep and so large that everything above it must move too — the ground itself has changed, not just the weather. Writers like it because it suggests something slow, enormous, and impossible to stop. That figurative use is common in newspapers and speeches, and there it often gets stretched to mean simply 'very big', which is looser than the picture the word really paints.

Outside science在科學之外, the word has a second life這個字有了第二種生命 in the phrase 'a tectonic shift'在'a tectonic shift'這個說法裡, used about politics, business, or society用在政治、商業或社會上 to mean a change so deep and so large指一種深刻又巨大的變化 that everything above it must move too大到上面的一切都得跟著移動 — the ground itself has changed, not just the weather是地面本身變了，不只是天氣變了。Writers like it作家喜歡用它 because it suggests something slow, enormous, and impossible to stop因為它暗示著某種緩慢、巨大又無法阻止的東西。That figurative use is common in newspapers and speeches這種比喻用法在報紙和演講裡很常見, and there it often gets stretched to mean simply 'very big'而且常常被放寬成單純的「非常大」, which is looser than the picture the word really paints比這個字原本要畫出的畫面鬆散許多。

A much older, rarer sense means 'to do with building or construction', which is where the word actually started.

A much older, rarer sense一個古老許多、也罕見許多的意思 means 'to do with building or construction'是「跟建築或營造有關」, which is where the word actually started這其實才是這個字最初的起點。