The Horn of Africa is facing its worst drought in over 50 years; child malnutrition rates are more than double or triple the 15% emergency threshold and are expected to rise.
非洲之角目前正面临着50多年来最严重的干旱。儿童营养不良的比例已是15%这一紧急情况阈值的两倍或三倍，并估计还会攀升。
At last, the radiated field of axial-mode helical antenna and double ridged horn antenna is analyzed at this paper.
最后，本文对轴向模螺旋天线和双脊喇叭天线的辐射场进行了分析。
A blasting horn woke us in our family cabin - double bed, bathroom, shower, TV - at 6 a. m. the next day.
我们睡在有双人房、浴室、淋浴器和电视的客舱里，第二天早晨6点就被刺耳的喇叭声吵醒。
Since the double-ridged horn antenna owns many seductive characteristics, such as ultra broadband, relatively small size, high calibre efficient and gain etc.
由于双脊喇叭天线不仅具备超宽带特性，还具有体积小、增益和口径效率高等优点，因此本文选双脊喇叭天线作为所要设计的超宽带天线。
Since the double-ridged horn antenna owns many seductive characteristics, such as ultra broadband, relatively small size, high calibre efficient and gain etc.
由于双脊喇叭天线不仅具备超宽带特性，还具有体积小、增益和口径效率高等优点，因此本文选双脊喇叭天线作为所要设计的超宽带天线。
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