let alone

Finishing the film at all is an achievement, let alone getting people to see it.

There may be no way back to respectability for a supposedly major nation, let alone a global power, after “Vladimir, STOP!”

"I think she is seriously questioning whether to carry on, which would be a real shame because we don't have enough instructors, let alone female instructors in the industry."

"It's shocking that not a single water executive faced a fine, let alone a prison sentence, despite widespread law-breaking," he told the BBC's Today programme.

Separately, Foreign Ministry spokesman Guo Jiakun said China and the US had "not conducted consultations or negotiations on tariffs, let alone reached an agreement".