n.真空吸尘器...

Jacuzzi的音标：...

Using younger cocks, the preventive result of artificial synthesize arteannuin to Chicken Caecum Coccidiosis was examined.试验应用鸡公雏, 检测了人工合成青蒿素对鸡盲肠球虫病的预防效果....

curtsy的一般过去时为：curtsied...