Conservation of momentum
[化] 动量守恒
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
You don't need to do that, Grandpa.
你不用这样，爷爷。
I am 60 years old and siingle.
我六十岁了，仍然单身。
This machine joins the metal pieces together, he said.
“这台机器把金属片焊接起来，”他说