These warnings follow one of the weakest years ever seen for profit-taking by start-up investors, and come amidst predictions of an even worse period ahead. Only six companies that were backed by venture capital went public last year, the lowest numbers since the 1970s.
发出这些警告的背景是，就初创企业投资者获利而言，去年是最疲弱的年份之一，而且根据预期，今后一段时间将更加恶化。去年只有6家受风险资本支持的公司上市，为上世纪70年代以来的最低水平。
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