Nanocatalyst
纳米催化剂
🗣️ 情景例句
Don't move! Get down on the floor.
别动！趴到地上！
Courtesy costs nothing.
谦虚恭敬，不用分文。
while others rub their hands over his skin to the accompaniment of a monotonous and soothing chant.
其他人唱着单调的歌声用手抚摸象的皮肤。