4.表示保险费或费率,后接at,如: insurance at a slightly higher premium insurance at the rate of 5o 5.表示向某保险公司投保,后接With,如: nsurance with picc We have covered insurance on the 100 metric tons of wool for 110%of the invoice value against all risks4. 表示保险费或费率， 后接at，如： insurance at a slightly higher premium， insurance at the rate of 5％ 5. 表示向某保险公司投保，后接with， 如： insurance with PICC We have covered insurance on the 100 metric tons of wool for 110%of the invoice value against all risks