1. Important derivatives are: orphan, robot
重要派生词为： orphan， robot

2. To put asunder, separate.
使分离, 分开.

3. Suffixed form *orbh-o- , “bereft of father,” also “deprived of free status.”
添加后缀的形式 *orbh-o- , “失去父亲的,” also “被剥夺了自由的.”

4.

5. orphan , from Greek orphanos , orphaned;
orphan , 源自 希腊语 orphanos , 孤儿;

6. robot , from Czech robota , compulsory labor, drudgery, from Old Church Slavonic rabota , servitude, from rab? , slave, from Old Slavic *orb? .
robot , 源自 捷克语 robota , 义务劳动, 苦差事, 源自 古教会斯拉夫语 rabota , 苦役, 源自 rab? , 奴隶, 源自 古斯拉夫语 *orb? .

orbh的词源：

7. Pokorny orbho- 781.
波科尔尼orbho- 781.