this way; this direction; here; this (one); I; me
country; state; region; national government; central government; home (i.e. hometown, home country); (arch.) province (of Japan)
protection; safeguard; guardianship; preservation; conservation
genuine article; real thing; real deal
living thing; organism; creature; biology
certainly; of course; even if; no matter (who, what, when, where, why, how); without even; without so much as; at the (least, earliest, etc.)
miscellaneous; mixed; unorganized
to mix with; to be mixed; to be mingled
infrared rays; infrared radiation
inner structure; internal anatomy
machine; mechanism; instrument; appliance; apparatus
assertion; declaration; affirmation
to be unable to; to find difficult (unpleasant, awkward, painful) to do; to serve two or more functions or roles simultaneously; to contain (or combine) two or more features; to work in two or more jobs simultaneously (positions, etc.); to do alongside
until now; so far; up to the present
to differ (from); to vary; to not be in the usual condition; to not match the correct (answer, etc.); to be different from promised; isn't it?
specific; particular; designated; specifying; designating; identifying
frequency (esp. of waveforms)
band; zone; range; bandwidth
to let out; to utter; to issue; to send; to leave; to depart
some; any; in any way; of some kind; of some sort
signal; signalling; signaling; traffic light; traffic signal
judgment; judgement; divination; judgement
first; first base; first baseman; fast
protocol (in communications); protocol (diplomatic document); protocol (system of rules); protocol (of a scientific experiment or course of medical treatment)
what the?; what's that?; what are you doing?; what's going on?
international; diplomatic intercourse
space flight; spaceflight
learned society; scientific society; academy; academic meeting; academic conference
et cetera; etc.; or something; the likes of; for example; for instance
nature; the natural world; realm of nature
common; shared; to be common (to); to be shared (by); -wide
information; news; intelligence; information; data contained in characters, signals, code, etc.
gradually; steadily; slowly; little by little; step by step; by degrees
side (of something, or taking someone's side); part; (watch) case