Free vaccines are more valuable than expensive treatments, yet harder to promote.

石油化工行业的未来在于数字化转型和智能化发展。

译文：听取多方面的意见才能明辨是非，只听信一方面的话就会分不清是非。

The night is a great canvas, but the stars are its paint.

时间是一个小偷，偷走瞬间，只留下阴影。