onset

the beginning of something, especially something bad

例句: Evidence shows that speaking a second language can help delay the onset of dementia.

1）翻譯下面的句子：
經(jīng)濟危機爆發(fā)后，投資面貌發(fā)生了巨大變化。

After the onset of the financial crisis, the investment landscape has been changed.

參考翻譯：The investment landscape has been changed tremendously since the onset of the financial crisis.

2）場景：他一受到感染就去看醫(yī)生了。

造句：He went to see the doctor at the onset of the infection.