您要查找的是不是：
- 富足左C-lpp半群 abundant left C-lpp semigroup
- C-lpp半群 C-lpp semigroups
- lpp半群 lpp semigroup
- 弱左C半群 left C-semigroups
- 左C-半群 Left C-semigroups
- 左C-Ehresmann Weakly left C-semigroups
- 左C-rpp半群 left C - rpp semigroup
- 六点半 half past six
- 他养了一群羊。 He keeps a flock of sheep.
- 玛丽拉了拉控制左舵的绳子。 Mary pulled her left rudder string.
- 他喀嚓一声将棍子折成两半。 He snapped the stick in two.
- 流星群 meteor swarm
- （口令）右[左]转弯走！ Right [left] wheel!
- 那旗帜降了半旗。 The flag was flown at half-staff.
- 一群暴民闹事反对市政府。 A mob was rioting against the municipal government.
- 他们在半年内盖好了这幢房屋。 They finished the house within half a year.
- 那些孩子像一群羊一样挤在一起。 The children huddled together like a flock of sheep.
- 人脑从中央垂直地分为两半球。 The human brain is divided vertically down the middle into two hemispheres.
- 这些商店晚上九点半打烊。 The stores shut at 9:30 p.m.
- 约翰是这群人中的佼佼者。 John is the best of the bunch.
