英漢例句雙語例句They made their observations as the planet passed in front of its parent star in what is called a transit.HD 189733b從其主恒星前面經(jīng)過時，即發(fā)生所謂的凌日現(xiàn)象時，科學家們進行了觀察。mei2er.blog.163.comTo examine an alien planet'satmosphere, the planet concerned must transit its parent star in the line ofsight from Earth.只有當?shù)赝庑行菑乃哪负阈潜砻媛舆^，且在地球上可觀測到時，才能對該行星的大氣層進行檢測。Because they are both large and close they are easier to detect from their gravitational effect on their stars and also more likely to transit the disc of the star.因此“熱木星”必然在離它們主恒星很遠的地方形成（其組成物質(zhì)在遠離主恒星的外圍），然后向內(nèi)部遷移，最終在非常接近其主恒星的軌道上運行。 許多天文學家認為，這是由形成“熱木星”的星塵圓盤與其主恒星的引力相互作用造成的。權(quán)威例句But if the planet's orbit is nearly edge-on, as viewed from Earth, then the planet will transit its parent star.ECONOMIST: Transits of VenusTelescopes such as Kepler search for planets as they transit, or cross in front of, their star, causing telltale dips in the star's brightness.MSN: News editorKepler flags exoplanet candidates via the transit method, which looks for dips in a star's brightness caused by an object crossing in front of it.MSN: Kepler telescope adds 41 planets to its list - Technology & science - Space - Space.com star transit更多例句