Objective Proficiency p 120. Health. Extra Speaking
Step in for someone: "tomar su lugar" (el lugar del otro) E.g. "Tom was sick, so Jack had to step in for him."
Trip: to catch your foot on something and fall or almost fall. E.g. She tripped and fell. Someone will trip over that cable.
Catch up with somebody:to
finally start to cause problems for somebody after they have managed to
avoid this for some time. Alcanzar, pasar factura. E.g. She was terrified that one day her past problems would catch up with her.
Show sth up: to become visible; to make something become visible. E.g. A broken bone showed up on the X-ray. The harsh light showed up the lines on her face.
Come about: to happen. E.g. Can you tell me how the accident came about?
Quack: (disapproving) a person who dishonestly claims to have medical knowledge or skills. E.g. Quack doctors. I've got a check-up with the quack (= the doctor) next week.
Sciatica: /saɪˈætɪkə/ pain in the back, hip and outer side of the leg, caused by pressure on the sciatic nerve.
take a heavy toll (on somebody/something)/ take its toll (on somebody/something)
to have a bad effect on somebody/something; to cause a lot of damage, deaths, suffering, etc