hard to say; inexpressible; hesitant to say; embarrassing; delicate
writing brush; paintbrush; writing with a brush; drawing with a brush; writing (composing text); the written word
to deliver; to forward; to send; to report; to notify; to file notice (to the authorities)
plain text; unciphered text
to replace; to move; to change the position of
form; method; system; formula
four-digit number; thousands column
to need; to call for; to require
receiving (a message, letter, email, etc.); reception (radio, TV, etc.)
any; all; every; both; either; none (with neg. verb)
manual labor; manual labour; manual procedures
secrecy; highly classified information
retention; maintenance; preservation
judging from; on the basis of; from the point of view of
radio operator; telegraphist; telegraph operator; radio officer
(powers of) concentration; ability to concentrate
vexatious; troublesome; complicated
article; goods; fine thing; fellow; (arch.) prostitute; (arch.) price
trouble; bother; trouble; difficulty; care; attention
even if not; even without
national border; provincial border
point (of a story, argument, etc.); point (e.g. in stock exchange movement); percentage point; switch; points; point; site
to a surprising degree; to a remarkable extent; surprisingly; astonishingly; amazingly; alarmingly
faithful; devoted; loyal; honest; true
in accordance with; according to; as X, then Y (e.g. as we age we gain wisdom, as wine matures it becomes more valuable, etc.)
to be believed to; to be expected to; to be feared to; to be poised to; to be considered to; to be likely to
interval; period of time; among; between; good opportunity; chance
Yue (kingdom in ancient China; 6th C-334 BCE); Vietnam
railroad; railway; rail transport
Lao Kay; Lao-cai (Vietnam)
running (of a car, bus, etc.); traveling; travelling; running (of a program)
northern part; the north (of a region)
going through; going via; going by way of
various countries; various regions; various provinces
stagnation; standstill; accumulation; stay; sojourn
treatment; service; handling; management