Nonquaternary
[化] 非季鹽的; 非季銨鹽的
??? 情景例句
All right, everybody.
各位， 你們好。
I'm afraid you will miss your train.
我怕你會錯過火車。
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.
火災過后，所有的管道和龍頭都被標得一清二楚，而且加入勞動隊伍的新工人在開始工作之前要接受有關的安全教育。