例句與造句

1. NMDA receptor channels are heteromers composed of the key receptor subunit NMDAR1 ( GRIN1 ) and 1 or more of the 4 NMDAR2 subunits : NMDAR2A ( GRIN2A ), NMDAR2B ( GRIN2B ), NMDAR2C ( GRIN2C ), and NMDAR2D ( GRIN2D ).
2. It's difficult to find nmdar2a in a sentence. 用nmdar2a造句挺難的