Equilibrium of forces
[化] 力的平衡
🧩 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];
n. 势力；兵力；武装力量（force的复数形式）
🗣️ 情景例句
She has both a good brain and beauty.
她才貌双全。
Messengers should neither be headed nor hanged.
两国相争，不斩来使。
In 1928 some porpoises were photographer working like beavers to push ashore a waterlogged mattress.
1928年，有人拍摄到了海豚像海狸一样把浸透水的床垫推上岸的情景。