Prokaryotes lack organelles such as nucleoli, mitochondria, plastids , Golgi apparatus, and do not exhibit cyclosis. 原核生物无细胞器,如核仁 、 线粒体 、 质体 、 高尔基体等, 不出现胞质环流.
He spends on the average two hours a day on reading.他平均每天用两小时读书.On the average, such transformations balance out.平均起来, 这种转化可以互相抵消.This statement is true only on the average.这种说法只是大体上正确....
This year we're going trekking in Nepal.今年我们准备去尼泊尔远足。She can't come pony trekking after all because she's in a delicate condition.她结果还是不能坐小马车旅行,因为她已怀孕.When we think of adventurers, many of us conjure up im...
The programme was deliberately slanted to make the home team look good.这个节目故意偏向主场队，以使他们看上去表现还不错。Sheets of rain slanted across the road.倾盆大雨斜着打落在路上。She had slanted brown eyes.她有一双棕色的丹凤眼。...