彼女はダイエット中なので甘い物は控えている。

she; her; her; girlfriend; sweetheart

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

be; is; indicates past or completed action; indicates light imperative

that being the case; because of ...; the reason is ....; given that...

sweet-tasting; sweet; sugary; sugared; fragrant (smelling); sweet (music); lightly salted; light in salt; not spicy; naive; overly optimistic; soft on; generous; indulgent; easy-going; lenient; half-hearted; not finished properly; insufficient; not satisfactory; inadequate; loose; mild; tempting; enticing; luring

thing; object; article; stuff; substance; one's things; possessions; property; belongings; things; something; anything; everything; nothing; quality; reason; the way of things; used to emphasize emotion, judgment, etc.; used to indicate a common occurrence in the past (after a verb in past tense); used to indicate a general tendency; used to indicate something that should happen; item classified as ...; item related to ...; work of ...; cause of ...; cause for ...; somehow; somewhat; for some reason; really; truly

to be temperate in; to refrain; to abstain; to hold back; to restrain oneself from excessive ...; to make notes; to jot down (e.g. phone number); to be in preparation for; to be in waiting for; to be soon; to be in the offing; to be in a close relationship (e.g. as a backer, etc.)