insured against短语⁴¹⁰⁵⁶ 基本例句 🌏投保 The risk that buyers will not buy goods at the prices offered is not of a kind that can be statistically estimated and risks can only be insured against if they can be so estimated. 买家不愿按提供的价格购物的风险不是一种可以统计估计的风险，只有能被统计估计的风险才能被保险。 study-abroad-web