consider
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→yi4si5 • yìsi
meaning
mean, idea
我 不 懂 这 句话 的 意思。
I don't understand the meaning of this sentence.
这 个 字 有 两 个 意思。
This character has two meanings.
我 不 明白 这 个 笑话 的 意思。
I don't understand the meaning of this joke.