1、Why does this happen?
2、How could this be?
3、How can it be?
4、how did we come to this?
为什么：why;?why is it that;?how is it that;?forwhy;?whereto
出现：appear;?appearance;?arise;?emerge;?grow
现象：phenomenon;?appearance
例句：
1、为什么会出现这种现象呢？在大量的实验中，我们发现各种材料中均有价电子密度以及正电子寿命饱和的现象，但目前还没有人深入研究这种现象的本质。
Over?a?very?large?number?of?experiments,?we?found?that?the?phenomenon?of?covalence?density?and?positron?life?saturation?are?almost?existed?in?all?kinds?of?materials,?but?there?is?still?no?one?in-depth?study?on?the?nature?of?this?phenomenon.?
2、为什么会出现上述这种相反的现象呢？
Why?does?this?reverse?phenomenon?appear
出现 [chū xiàn]
to appear
to arise
to emerge
. 近义词或词组
present itself | arise | advent | into the open | vent itself | appeared | appearance | appear | come on the scene | come out | come forth | emersion | chop out | emerge | upcropping | emergence
出现 [chū xiàn] appear; arise; emerge; grow; turn up:
