第1个回答 2017-07-14
make a supplementary insurance expenses
make a supplementary insurance premium
都可以
第2个回答 2017-07-14
追加保险
additional premium更多释义>>
[网络短语]
additional premium;Ad hoc top up premium;additional call
详细用法>>
第3个回答 2017-07-14
added premium或者additional premium