gravitational lens的用法和樣例：
例句
- Otherwise invisible to telescopic views, the dark matter was mapped by observations of gravitational lensing of background galaxies.
另外對於望遠鏡視野里不可見的暗物質，是通過對背景星系引力透鏡觀測后繪畫上去的。 - Dr Clowe and his colleagues used a technique called gravitational lensing to detect the mass distribution of the bullet cluster.
克洛博士和他的同事使用一種叫做引力透鏡的技術來探測子彈狀星雲團內物質的分佈情況。
