prolonged short time
延长短时间
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Thanks to several rounds of quantitative easing both short-term and long-term rates have hovered near zero levels for a prolonged period of time.
FORBES: 3 Investment Ideas to Ride a Japanese Rebound, EWJ, JOF, and KUB
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