S.l.a.
[医] 左骶前(胎位)
🗣️ 情景例句
The signs of the city never fail to impress the foreign tourists.
外国游客无一不对该城市留有深刻的印象。
The bus is bigger than other cars, but too crowded.
巴士虽然比小汽车大，但是太拥挤了。
I appreciate your help.
我感谢你的帮助。