Sra
abbr. sulforicinucleic acid 硫铜酸
🗣️ 情景例句
How much does a round trip ticket to go there cost?
一张去那边的往返票要多少钱？
In vain.
白忙一场。
She heard the front door open and heavy footsteps in the hall.
她听见前门被打开，走廊里响起重重的脚步声。