Rnt
abbr. residual nitrogern time 氮停留时间; roentgenologist 德国物理学家; roentgenology X光线学; X光科
🗣️ 情景例句
Don't forget to breathe.
别忘了呼吸。
I would like to confirm the reserved seat.
我要确定已预定的位置。
Mr. Smith taught English at a school.
史密斯先生在一所学校教英语。