自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
VERB 起源于;来自;由…造成 If a condition or problem stems from something, it was caused originally by that thing.
All my problems stem from drink...
Much of the instability stems from the economic effects of the war.
VERB 阻止;遏制;制止 If you stem something, you stop it spreading, increasing, or continuing.
Austria has sent three army battalions to its border with Hungary to stem the flow of illegal immigrants...
奥地利已派出 3 个营的兵力去本国和匈牙利交界的边境地区阻止非法移民的流入。
The authorities seem powerless to stem the rising tide of violence...
N-COUNT (植物的)秆，茎，梗 The stem of a plant is the thin, upright part on which the flowers and leaves grow.
He stooped down, cut the stem for her with his knife and handed her the flower.
N-COUNT (酒杯的)颈，柄脚 The stem of a wine glass is the long thin part which connects the bowl to the base.
N-COUNT (烟斗)柄 The stem of a pipe is the long thin part through which smoke is sucked.
He chewed the stem of his pipe and eyed her sceptically.
N-COUNT (语法中的)词干 In grammar, the stem of a word is the main part of it, which does not change when the ending changes.
PHRASE 从船首到船尾 If something happens from stem to stern on a boat, it involves the whole of the boat.
A South African television report said the ship was ablaze from stem to stern.