Critics of the project speculate about how many hospitals could be built instead.

对该项目持批评态度的人则猜想这相当于可以建多少家医院。

The doctors speculate that he died of a cerebral haemorrhage caused by a blow on the head.

医生们猜测他死于头部撞击引起的脑溢血。

The researchers speculate that this weather spreads the disease.

研究人员推测，这种天气会传播疾病。

The banks made too many risky loans which now can't be repaid, and they speculated in property whose value has now dropped.

各银行贷出去太多高风险贷款，目前无法收回；他们还进行地产投机，而地产的价值目前已经下跌了。