Fds
[醫(yī)][=fibronectin-depleted serum]纖維連結(jié)蛋白缺乏血清
??? 情景例句
The number's no longer in service.
這個(gè)號(hào)碼現(xiàn)在是空號(hào)。
I usually feel timid in the presence of very bright people.
站在聰明人面前，我感到羞怯。
like the cooling of a hot kettle or the wearing-out of a pair of shoes.
就像一壺?zé)崴t早會(huì)涼下來(lái)，一雙鞋漸漸會(huì)磨破一樣。