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The average bond rating fell from a in 1981 to BBB - today, just one notch above junk status.
债券平均评级已经从1981年的A滑落至如今的BBB-，距垃圾债不过一步之遥。
youdao
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The average bond rating fell from a in 1981 to BBB - today, just one notch above junk status.
债券平均评级已经从1981年的A滑落至如今的BBB-，距垃圾债不过一步之遥。
youdao