Retarder
n. 阻滞物\\n[化] 阻滞剂; 迟延剂; 抑制剂; 阻聚剂
🗣️ 情景例句
Notices are displayed on the bus asking people not to smoke.
公共汽车上张贴着请勿吸烟的公告。
It doesn't seem like that.
似乎不象是那样。
As he was uncertain about making films with dialogue.
因为他对是否能制作配有对白的电影片没有把握。