51.   Under the IMO rules and regulations, seafarers from countries not included in the list will be evaluated onboard foreign vessels to test their skills.

52.   Each year, the Sevens tests the skills of top rugby players.

v. + skill >>共 469
have 9.25%
develop 6.55%
learn 6.37%
hone 6.11%
teach 3.92%
use 3.64%
improve 3.57%
acquire 2.54%
require 2.54%
lack 2.51%
test 1.63%
test + n. >>共 1571
water 2.77%
drug 2.34%
system 2.31%
theory 2.05%
sample 1.80%
product 1.63%
limit 1.50%
idea 1.17%
missile 1.07%
device 1.07%
skill 0.75%
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