The source and grammaticalization of the temporal adverb zhengzai (正在);
从明代小说中的“正”、“在”看时间副词“正在”的来源
In modern Mandarin, the three temporal adverbs zheng, zhengzai and zai are similar in meaning, but in usage they show both similarities and differences.
“正”、“正在”与“在”是现代汉语中意义相近、用法同异互参的三个时间副词,它们形成的时间以及虚化的途径不完全相同。
They are studying to develope a substitute for this kind of medicine.
他们正在研制一种该药的替代品.
Inventors are now working on steam cars as well as electric cars.
发明家正在研制蒸汽汽车和电子汽车。
The military establishment is working on a number of new nukes.
这家兵工厂正在研制一批新式核武器。
are creating prototype computer circuits on atomic or Molecular levels
正在研制原子或分子大小的计算机电路
The equipment under development will reduce the error probability by a factor of 7.
正在研制的设备会使误差概率降到七分之一.
and some companies are experimenting with curved or @wrap-around@ displays
一些公司正在研制凹面或“全景式”显式屏，
Doctors are developing artificial wombs in which embryos can grow outside a woman's body.
医务人员正在研制人造子宫,实现胚胎体外生长。
Currently, we are conducting investigations and research and formulating plans.
我们现在正在进行调查研究，制定方案。
Now Professor Yuan is working on developing super hybrid rice.
现在袁教授正研制超级杂交水稻。
They are thrashing out a new economic policy.
他们正在研究制定一个新的经济政策。
Copying messages XX
正在复制消息 XX
They bs work on the perfection of their new paint formula
他们正在努力研制尽善尽美的新颜料配方
They are working on the perfection of their new paint formula.
他们正在努力研制尽善尽美的新颜料配方.
They is work on the perfection of their new paint formula.
他们正在努力研制尽善尽美的新颜料配方。
that he is assembling a team to produce the first human clone,
他正在组建一个研究小组来制造第一个克隆人。
In addition, the NPC Standing Committee is working out a Supervision Law.
此外，全国人大常委会正在抓紧研究制定《监督法》。
The new missiles are currently undergoing the final test.
新研制的导弹目前正处在最终测试阶段。
Fuel researchers are exploring additional ways to make ethanol.
燃料专家正在研究更多制造乙醇的方法。