Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
The roads are packed with holiday makers.
路上挤满了度假的人。
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。
However, when I was going out shopping last week, I noticed him in the garden near the gate.
然而上星期我正要出去买东西时，发现它正呆在花园里边靠门的地方。