at risk有危险
例句:The disease is spreading, and all children under five are at risk.
这疾病在蔓延, 五岁以下的小孩都有危险。
2.And their finances had been shattered. The transplant surgery will cost close to a million dollars.
close to离…近,接近
例句:His house is close to mine.
他的房子靠近我家。
It is close to fact.
这更接近于事实。