Zedeflon
四氟乙烯均聚物
🗣️ 情景例句
Lacks confidence and poise is nervous and ill at ease.
信心不足，不够自信，精神紧张，心神不定。
In prosperity caution, in adversity patience.
处顺境时要小心，处逆境时要耐心。
The ball struck him so hard that he nearly fell into the water.
球重重地打在他身上，使他差点儿落入水中。