どちらも「finally」というmeaning意味だが、ニュアンスto be / is是different不同(modifier / structural particle)的。at long last总算 は informal で、relief をpartner伴う — 心配やvariant of 焦躁焦燥のback後に、 finally outcome結果が acceptable にvariant of 收収まったsituation場合。finally终于 はより neutral and objective で、どんなchief長grain年の待望のoutcome結果(good or bad)にもto make使える。 at long last总算 はほとんどsubject (in grammar)主語のfront前にto come来ない。
waited等了a long time很久he,他at last (relief)总算came来了。
After waiting ages, he's finally here.
after经过years of多年effort努力we,我们finally终于succeeded成功了。
After years of effort, we finally succeeded.
** remember **:at long last总算 = "finally, phew" (informal relief); finally终于 = neutral "at last." bad ending には finally终于 をto make使い、variant of 绝絶Japanese variant of 对対に at long last总算 をto make使わない:finally终于to be defeated失败(completed / change)了("failed in the end")✓、but但 at long last总算to be defeated失败(completed / change)了 ✗ — to be defeated失敗に relief はないから。
Watch out
- outcomes が心配だったgood intention好意(modifier / structural particle)的なoutcome結果だけのsituation場合に at long last总算 をto choose選べ。