Serums
浆液, 血清
🗣️ 情景例句
What else?
还有什么？
Slowly, stricter laws and regulations are being passed by Congress.
慢慢地，在国会表决通过了更严厉的法律法规。
Look at the ice! Be careful! It's thin.
瞧那冰！当心！冰很薄。