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- This conclusion derived from studies primarily on bacteria such as Escherichia coli and other prokaryotes (simple one-celled organisms lacking a nucleus). 这个结论主要推导自大肠杆菌之类的细菌和其他原核生物(缺乏细胞核的单细胞生物)的研究。
- Prokaryotic (pro-kar’e-or’ik) cells lack a nucleus and other membrane-bound structures, and eukaryotic (u-kar’e-ot’k) cells have such structures. 原核细胞没有细胞核和其它膜结构,而真核细胞有。
- Lacking a nucleus. 无核的
- Lacking a pianist, I had to sing solo. 没有人用钢琴伴奏,我只好独自歌唱。
- A nucleus can have only one Y-chromosome. 一个核可以仅有一个Y染色体。
- It typifies the size of a nucleus. 它表征了原子核的大
- Lacking a purpose; meaningless or aimless. 缺少目的的;无意义的或无目标的
- The atom has a nucleus at its core. 在原子的中心有一个原于核。
- Lacking a true body cavity or digestive tract. 无体腔的,无消化道的无真正意义上的体腔的或无消化道的
- A nucleus can have only one Y -chromosome. 一个核可以仅有一个y染色体。
- The red blood cell of chickens has a nucleus. 鸡的红色血细胞有一个细胞核。
- Lacking a backbone or spinal column;not vertebrate. 无脊椎的缺少脊骨或脊柱的;无脊椎的
- Lacking a sense of responsibility;reckless. 轻率的缺乏责任感的;冒失莽撞的
- Lacking a purpose;meaningless or aimless. 缺少目的的;无意义的或无目标的
- Lacking a myelin sheath.Used of a nerve fiber. 缺少髓鞘的。用来指一根神径纤维。
- Lacking a firm support or basis; unsubstantial. 无基础的缺乏坚实的支撑或基础的;不充实的
- We think of a nucleus as make up of neutron and proton. 我们认为原子核是由中子和质子构成的。
- Lacking a myelin sheath. Used of a nerve fiber. 缺少髓鞘的。用来指一根神径纤维
- Lacking a sense of responsibility; reckless. 轻率的缺乏责任感的;冒失莽撞的
- We think of a nucleus as made up of neutron and proton . 我们认为原子核是由中子和质子构成的。