Siu
abbr. 国际海员工会（Seafarers' International Union）；系统接口单元（System Interface Unit）
🗣️ 情景例句
Don't interfere in other people's affairs.
别干涉他人的事。
All things are easy that are done willingly.
做事乐意，诸事容易。
We should have been given the large quantity price.
你应该开大宗折扣价才是。