Reuters:

An Elon Musk tweet saying Japan would "eventually cease to exist" without a higher birthrate set off a flood of sarcasm and anger on Monday - though much of the angst was aimed at a Japanese government many said did little to address the issue.

Musk, the head of electric vehicle maker Tesla, at the weekend tweeted, "At risk of stating the obvious, unless something changes to cause the birth rate to exceed the death rate, Japan will eventually cease to exist. This would be a great loss for the world."

生词短语：

cease

停止; (使)终止

birthrate

出生率

set off

引发；触发；激起

sarcasm

讽刺; 嘲讽

angst

忧虑，焦虑

tweet

在Twitter上发文