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下がる， 下る， さがる
1. to come down, to go down, to fall, to drop, to sink, to get lower
2. to hang, to dangle
3. to move back, to step back, to withdraw, to retire
4. to deteriorate, to fall off, to be downgraded
5. to get closer to the present day
6. below, south of
挂，垂下；下降，下行，坠落，下坠，下沉，降低；回调
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一気に， いっきに
1. in one go, in one gulp, in one breath, without stopping, without pausing, without a rest, in one sitting, at a stretch
2. suddenly, all of a sudden, all at once
连续不断，一口气；突然
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進む， すすむ
1. to advance, to go forward
2. to precede, to go ahead (of)
3. to make progress, to improve
4. to deepen, to heighten
5. to be fast (of a clock), to be ahead
6. to do of one's own free will
进展，推进；前行；进步；深入