风险评级的英文：
risk rating

risk是什么意思：
n. 危险，风险
v. 冒...的风险；冒险干

Pest risk analysis includes pest risk assessment and pest risk management.
有害生物风险分析包括有害生物风险评估和有害生物风险管理。

Was she not stupid to take this risk?
她冒这样的风险岂不是太愚蠢了？

The risk of a swine flu pandemic?
有猪流感疫情风险？

intermixture and contamination risks
混杂、沾污险

Intermixture & Contamination Risks
混杂沾污险

rating是什么意思：
n. 老鼠；卑鄙小人；
v. 捕鼠；弄蓬松；告密，出卖；违约

You dirty rat !
你这个卑鄙的小人！

Rats! It's just no use! !
胡说！这都没法用！

She has a complex about rats.
她对老鼠有病态恐惧。

The rat was caught in a trap.
那只老鼠被捕鼠器捉住了。

The little boy likes to rat.
这个小男孩喜欢捕鼠。