此时的英文：
now
this moment

The area at this time was generally termed the Eastern Roman Empire.
此时该地区通称东罗马帝国。

Then his inconvenience became distress.
此时，他已从手头不便落到一文不名的境地。

At this point Lactobacillus plantarum and Lactobacillus brevis continue to function.
此时植物乳杆菌和短乳杆菌继续起作用。

Singapore had just emerged relatively unscathed from the Asian economic crisis and the market was booming again.
此时的新加坡刚从波及全亚洲的经济危机中走出来，市场又恢复了往日的繁荣。

held a gourd full of rum to his mouth
的人，此时他正拿着一满瓢甜酒凑到他的嘴边

Now I return to a girl being because girls are quiet and obedient, they only know to study hard and work hard.
我此时又回到了女儿身.因为女孩子文文静静,乖乖巧巧,知道用功和努力。

She looked up at him with twinkling eyes, as if waiting for a clear-cut answer
此时眉卿也抬起头来看着她父亲，眼皮似笑非笑的，仿佛定要她父亲给一个明明白白的解答。

Carla was growing more hopeful by the mile and by the minute
卡拉此时更加满怀希望。

Go while the going is good.
此时不走，更待何时?

Can't replicate at this time.
此时无法进行复制。

at this exigent moment
在此危急关头

On the spur of the moment
一时冲动

stalling moment
失速力矩|使气流离体力矩

He relaxed for a moment.
他浑身放松了一会。

At the very moment, there was a loud crack.
就在那一刹那，突然传来一阵巨大的爆裂声。