ประโยคภาษาจีน : 中文句子 |
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nǐ dìng 拟定 yōu shù 优树 biāo zhǔn 标准 hé 和 xuǎn 选 yōu 优 fāng fǎ 方法 pǔ chá 普查 le 了 qián 黔 zhōng 中 dì qū 地区 de 的 yōu shù 优树 |
The criterion and the method of selecting plus trees were worked out . and all plus trees in the center of Guizhou were investigated. |