ni2 10-11/12/14

scuba diving /ˈskuːbəˌdaɪvɪŋ/ noun [ U ]

[ SPORT ] a sport in which you swim under water using special equipment for breathing

snorkel 2 /ˈsnɔːk ə l/ verb [ I ] UK present participle snorkelling , past snorkelled , US present participle snorkeling , past snorkeled

[ SPORT ] to swim using a snorkel

Botiquín (de primeros auxilios) first-aid kit

voluntary /ˈvɒlənt ə ri/ adjective

1 WORK Voluntary work is done without being paid and usually involves helping people.

She does voluntary work for the Red Cross.

voluntary organizations

2 NOT FORCED done or given because you want to and not because you have been forced to

voluntary contributions

The opposite is involuntary

voluntarily /ˌvɒlənˈteərəli/ adverb

She left voluntarily.

seminar /ˈsemɪnɑː r / noun [ C ]

[ EDUCATION ] a meeting of a group of people with a teacher or expert for training, discussion, or study of a subject

tutor /ˈtjuːtə r / noun [ C ]

1 TEACHER [ EDUCATION ] someone who teaches one person or a very small group of people

a private tutor

2 UNIVERSITY TEACHER [ EDUCATION ] UK a university teacher who is responsible for a small group of students

tutor verb [ T ]

workload /ˈwɜːkləʊd/ noun [ C ]

the amount of work that you have to do

Nurses have a very heavy workload (= they work hard) .

proper /ˈprɒpə r / adjective

1 CORRECT [ always before noun ] correct or suitable

the proper way to do something

Please put those books back in the proper place .

2 REAL [ always before noun ] mainly UK real and satisfactory

his first proper job

You should eat some proper food instead of just sweets.

3 ACCEPTABLE socially acceptable

It's not proper to interrupt someone when they're speaking.

4 MAIN [ always after noun ] referring to the main or most important part of something

I live outside Cambridge - I don't live in the city proper.