I'm available to you 24/7 - круглосуточно


to infinity - до бесконечности

gum - десна (бывает и такое)

drastic ['dræstɪk]
- 1) радикальный.
Ex: we don't have to do anything drastic right now.
- 2) интенсивный
Ex. at least part of the problem of rapid climate change has been caused by too drastic deforestation

sleep deprivation [ˌdeprɪ'veɪʃ(ən] - недосыпание
Ex. the dangers of sleep deprivation.

(a)round the clock - круглосуточно.
Ex. mobile phones and email allow us to stay in touch round the clock.