-----------------------------------
急に， きゅうに
1. swiftly, rapidly, quickly, immediately, hastily, hurriedly
2. suddenly, abruptly, unexpectedly
3. sharply (of a slope, bend, etc.), steeply
迅速地、快速地、快些、立刻、匆忙地、急匆匆地；突然地；突然间；出乎意料地；(指斜坡、弯道等)陡峭地；陡直地
-----------------------------------
下り坂， くだりざか
1. downhill, downward slope, descent
2. decline, waning, ebb, (going) downhill
下坡的；下降的；下降过程、(天气)转坏；衰退、减弱、消退、(走向)下坡路
が
1. indicates the subject of a sentence
2. indicates possession
3. but, however, (and) yet, though, although, while
4. and
5. used after an introductory remark or explanation
6. regardless of ..., whether ... (or not), no matter ...
7. indicates a des...
tbd