例句：
Investing in airlines is a very risky business.
這不是冒險的`時候，他知道他應該按規則行事。
This was not the time to take risks; he knew he should play it by the rule book.
這是一項冒險的舉動，但也許能換得更多的時間。
It was a risky operation, but might buy more time.
例句：
Investing in airlines is a very risky business.
這不是冒險的`時候，他知道他應該按規則行事。
This was not the time to take risks; he knew he should play it by the rule book.
這是一項冒險的舉動，但也許能換得更多的時間。
It was a risky operation, but might buy more time.
