He can comfortably afford the extra expense.

他支付这些额外的费用毫无问题。

I believe the extra expense is worth it.

我相信花这钱是值的！

This causes both inconvenience and extra expense in repairs.

这会造成维修的不便和额外花销。

Small salt makers who fear extra expense often lobby against it.

一些不愿承担额外成本的小型盐商经常游说反对加碘盐。

He promised that when he returned, he would reimburse the extra expense.

并且答应会回来赔偿超额的费用。