?? 詞語組成解析
pain
[pein]
n. 痛苦;刻苦;令人厭煩的人[事物];身體某部分的疼痛[不適];
vt.& vi. （使）疼痛，（使）痛苦，傷害;
vt. 使…痛苦;使…煩惱;
vi. 感到疼痛;引起疼痛;
unit
['ju:nit]
n. 單位，單元;裝置;個體;[數(shù)]單位數(shù);
??? 情景例句
Have a go at it.
你來試一試。
He gave me a chest X-ray and took my blood pressure.
他給我做了X光檢查并且量了我的血壓。
It would be easier for us if you would ship next month.
如果能在下個月出貨的話我們會輕松一些。