Safa
abbr. solar-array failure analysis 太阳排列故障分析; soluble-antigen fluorescent antibody 可溶性抗原荧光抗体
🗣️ 情景例句
Sit down. Sit down.
请坐。请坐吧。
Turn left at the second light and then go straight for two blocks.
到第2排红绿灯处往左拐，然后一直往前走，过两个街区。
Thanks.
谢谢。