Heartwood
n. 心材
✅ 同义词
🗣️ 情景例句
I have a new math program, and I want to learn how to use it.
我有一个新的数学程式 我想学习怎样用。
A cracked bell can never sound well (is never sound).
破钟无好音。
Don't count on me.
别指望我。