逐漸增加 zhú jiàn zēng jiā

DEFINITIONS

  1. to increase gradually
  2. to build up

CHARACTERS

逐 zhú
HSK 5
chase, expel; one by one
漸 jiàn gradually
增 zēng
HSK 4
increase, add to, augment
加 jiā
HSK 3
add to, increase, augment