Bestain
[医]贝他茵[小分子免疫疫苗增效剂]
🗣️ 情景例句
I keep in touch with my family regularly.
我定期和家里保持联系。
The bough that bears most, hangs lowest.
枝头结果越多，垂得越低。
Sally is looking at a big ship.
莎莉正在观看一艘大船。