can't be too careful
或者：
can't be careful enough
也可以把can't 改为can never 语意更强
这是固定句型,不能根据字面意思来理解
作为一名航天科学家,再怎么仔细也不为过.As a space scientist,one________________
can't be too careful
或者：
can't be careful enough
也可以把can't 改为can never 语意更强
这是固定句型,不能根据字面意思来理解