Toughening agent
[化] 增韧剂
🧩 词语组成解析
v. （使某物[人]）坚韧, 坚强, 强硬( toughen的现在分词 )
🗣️ 情景例句
What do you want to study?
你想学什么？
Would you please leave the door unlocked for me?
可以请你为我把门锁打开吗？
Most countries use these satellites to send and receive messages.
大多数国家利用这些卫星发送和接收消息。