On the other hand, trials at CIMMYT's principal wheat-breeding station at Obregon in Mexico indicate a slowdown in potential yield growth to only 0.4% a year.
可另一方面，国际玉米和小麦改良中心在墨西哥奥布雷贡的小麦育种站做的试验表明，小麦产量的年增长率可能降至0.4%。
Relaxing and fresh concert for piano and rainforest. Manuel Obregon takes his piano deep into the Costa Rican rainforest and summons frogs, howler monkeys and songbirds to join in.
钢琴家曼努尔用音乐带你进入哥斯达黎加的雨林深处，倾听梦幻之声。
Relaxing and fresh concert for piano and rainforest. Manuel Obregon takes his piano deep into the Costa Rican rainforest and summons frogs, howler monkeys and songbirds to join in.
钢琴家曼努尔用音乐带你进入哥斯达黎加的雨林深处，倾听梦幻之声。
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