提示：点击例句中的单词，就可以看到词义解释

The weighted average of 49 loans comprising the securities is aa .

这批证券由49笔贷款构成，其加权平均评级为aa级。

It noted that 98 per cent of rate bonds are aa or higher .

该报告指出，中国98%的评级债券具有aa甚至更高的信用等级。

Fatty acids called dha and aa serve as brain food stimulating neurological development .

母乳中的脂肪酸dha和aa则是一种健脑食品，可促进神经系统的发育。

No wonder australia 's big four banks are among the world 's best performers , with elite aa credit ratings .

难怪澳大利亚的四大银行都在全球最佳表现银行之列，信用等级也都是aa级。

None of the failures seemed to signal an immediate danger , so the thales aa was not removed from service .

这些故障似乎并非是危险的直接信号，所以泰勒斯aa皮托管并没有从飞机上拆除。