As this is the first deal between us, I hope we can trade on customary terms, i. e., letter of credit payable against sight draft.
由于这是我们之间进行的第一笔交易，我很希望能够遵照惯例，也就是说，用即期信用证付款。
2
As we must adhere to our customary practice, we hope you will not think us unaccommodating.
我们必须坚持自己的习惯做法，希望你方不要认为我们不给照顾。
3
Because the ride-share company uses this as a selling point , telling customers on their website that "there's no need to tip", even though it is customary in the US to tip taxi drivers.