let one's emotions show
давать выход своим эмоциям (часто не уместным)
The teacher let her emotions show when some of the students didn't leave the classroom during the break.
Другие идиомы:
- let (something) slip by
- let up
- let the chips fall where they may
- let (someone) have it
- let the cat out of the bag
- let go with (something)
- let out (some kind of sound)
- let off steam
- let (something) slip (out)
- let things slide
- let sleeping dogs lie
- let it all hang out
- let (something) off
- let (something) slide
- let alone (something)