be down on one’s uppers
穿着破旧的鞋, 处于困境… Read the rest
穿着破旧的鞋, 处于困境… Read the rest
经 出售存货… Read the rest
医 淋菌补体结合反应… Read the rest
追踪着某人, 掌握着某人行为的线索, … Read the rest
化 接枝改性… Read the rest
医 肺切开术… Read the rest
化 毒叶藤… Read the rest
经 决策人… Read the rest
医 用手取胎术… Read the rest