continuously uneasy, especially in fear of being detected焦慮不安，如坐針氈（尤指擔心被察覺）
there is no rose without a thorn
(proverb)every apparently desirable situation has its share of trouble or difficulty(諺)沒有無刺的玫瑰；世上沒有十全十美的事；有樂必有苦
a thorn in someone's side (或 flesh)
a source of continual annoyance or trouble經常使人苦惱（或生氣）的事（或人）
柯林斯高階英漢雙解學習詞典釋義
N-COUNT
(某些植物、樹木上的)刺，棘刺
Thorns are the sharp points on some plants and trees, for example on a rose bush.
例句
Roses will always have thorns but with care they can be avoided.玫瑰花上都有刺，不過只要小心就碰不到。
N-VAR
荊棘;帶刺的樹;帶刺小灌木
A thorn or a thorn bush or a thorn tree is a bush or tree which has a lot of thorns on it.
例句
...the shade of a thorn bush.一叢荊棘下的陰涼...the thorn and bramble thickets.荊棘密布的灌木叢
PHRASE
肉中刺;長期困擾的問題
If you describe someone or something as a thorn in your side or a thorn in your flesh, you mean that they are a continuous problem to you or annoy you.
例句
She's a real thorn in his side...她真叫他頭疼。The Party was a thorn in the flesh of his coalition.該黨是他所在聯盟的眼中釘、肉中刺。
英漢詞典釋義
n.
（玫瑰之類植物的）刺，棘刺
I was sitting on the thorns while waiting for the outcome.等待結果時我如坐針氈。The little boy stepped on a sharp thorn.那小男孩踩著了一根尖刺。
英英詞典釋義
Noun
1. something that causes irritation and annoyance;