Heliostats
(heliostat 的第三人稱 -s形式) n. 日光反射裝置\\n[醫] 定日鏡
??? 情景例句
get some background on the job.
了解這項工程的一些背景。
Nothing to be got without pains but poverty.
只有貧困可以不勞而獲得。
as if he were holding it completely enclosed in the hollow of his hand.
就好像完全握在自己手心里一樣。