onset：the beginning of something, especially something bad
例句：Evidence shows that speaking a second language can help delay the onset of dementia.
onset：開始=beginning，后可接如疾病妇垢、經(jīng)濟(jì)蕭條菱父、戰(zhàn)爭(zhēng)
例句：Since the onset of the war, the crime rate has skyrocketed.
仿寫：Since the onset of the financial crisis问窃，many companies have went broke.
翻譯：Since the onset of financial crisis溅呢，the investment landscape has changed a lot.
仿寫：Since the onset of the war，many children have lost their parents.
