suddenly，abruptly，unexpectedly，all at once，flare up ；

[例句] 卢布的实际购买力骤然下降。 The real purchasing power of the rouble has plummeted.

[例句] 任何突如其来的情况都可能造成暴力骤然升级。 Any unexpected circumstance that arises may catalyze a sudden escalation of violence.

step，move，procedure，measure，approach ；

[例句] 对于应该采取什么正确步骤，还是有些不明确。 There is some confusion about what the correct procedure should be.

[例句] 已采取步骤使某些软毒品合法化。 There are moves to decriminalize some soft drugs.

brash，heavy shower，sudden downpour，pour，[电影]Titan Rain；

[例句] 他在骤雨中撞到树上了。 He crashed into a tree in driving rain.

[例句] 这场骤雨有可能把低洼地淹没. The torrential rain may flood the low - lying land out.

pelter ；

[例句] 该银行昨天透露其利润骤降30％。 The bank yesterday revealed a 30 per cent nosedive in profits.

[例句] 暴风雪今天袭击了西部地区，导致气温骤降。 A snowstorm hit the West today, bringing with it frigid temperatures.

[医] shower ；

[例句] 在转换时期的RNA合成可能有短暂的骤增. During the climacteric may be a transient burst of RNA synthesis.

[例句] 他们想今后几年内使哈珀 - 格兰特公司的营业额骤增两倍. They want to treble Harper & Grant's business over the next few years.

delitescence，crisis ；

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