凹: a depression, indentation, concave, hollow...
境内: within the borders, internal (to a country, province, city etc), domestic...
扯: pull; haul; drag; draw, chat (with/to sb about sth); gossip (with sb about sth); natter (on sth)...
货车: truck, van, freight wagon...
极为: extremely, exceedingly...
俗话: common saying, proverb...
车: war chariot (archaic), rook (in Chinese chess), rook (in chess)...
赶上: to keep up with, to catch up with, to overtake, to chance upon, in time for...
保密: to keep sth confidential, to maintain secrecy...
伴: partner, companion, comrade, associate, to accompany...
