Our existence is far more tenuous than we might think. 但我们的生命远比想像的要脆弱。
Cassini had passed through a tenuous cloud. 卡西尼号还曾经穿越过稀薄的云层。
The air ten miles above the earth is very tenuous. 地面往上十英里处的气体是非常稀薄的。
He gave a tenuous account of his past life. 他对他过去的生活说得很含糊。
The tenuous state of the chromosomes during the period between cell divisions should not suggest that they are inert at this time. 在细胞分裂期间，纤细状态的染色体并不表明此时它们是不活跃的。
The cross-dating links were often tenuous. 跨年代的联系往往是空洞无力的。
