You can fake it for a while, but a lack of passion will catch up with you and your work.

短时间内你可能可以伪装，但是缺少热情，总会影响你自己和你的工作。

youdao

The separate scale of Life desire had 15 items and 3 dimensions: lack of passion of study, attending class and living.

大学生生活愿望低下分量表由学习热情低下、上课热情低下、生活热情低下3个维度构成，共15个项目。

youdao

The problem may be that you work at a career you aren’t passionate about, and you project this lack of passion to everyone you meet.

问题可能在于，你正在做着一份自己毫无热情的工作，然后也把这种缺乏热情的感觉传染给了你遇到的每个人。

youdao

While they might lack firepower, however, the rebels have plenty of commitment and passion for their cause.

CNN: Syria's uprising: From rocks to RPGs

Apart from some Brazilian soccer stars having apparently lost their passion for the game, the main cause has a lot to do with a lack of motivation and corporate expertise at the governing body, the Brazilian Football Confederation (CBF).

FORBES: It's Official: Brazil's Days As The World's Ultimate Soccer Power Are Over