Estera
[日]埃斯特拉(醋酯短纖維)
??? 情景例句
Smoking is harmful to your health.
吸煙有害健康。
We continued to struggle up the steep slope of the mountain.
我們為了攀登山的陡坡，不斷地倍嘗辛勞。
I can't type this letter.
我打不了這封信。