He walked to the door to knock at the door.

他走到门前敲门。

Pinocchio went straight to the Fairy's house, firmly resolved to knock at the door.

他径直走向仙女家，决定敲敲门进去。

All these certifications became useful jetton to knock at the door of good company.

因为这些认证成为敲开优秀公司大门的筹码。