The telescope's lens focused light directly onto the sensor, producing a crisp image of the distant nebula without any intermediary reflection.
望远镜的镜头将光线直接聚焦到传感器上，无需任何中间反射便产生了遥远星云的清晰图像。
• Solar panels convert sunlight directly into electricity.
From a Rhetorical Synthesis question · Expression of Ideas
Because lichens grow extremely slowly and absorb minerals directly from the air and rain, scientists use their size to estimate how long a rock surface has been exposed, a technique called lichenometry.
From a Central Ideas and Details question · Information and Ideas
The essay's closing paragraph returns to the question posed in its opening line, this time answering it directly using the evidence and reasoning developed throughout the body of the essay.
From a Text Structure and Purpose question · Craft and Structure
Which choice best defines “directly”?
B — In a straight line; without anything in between. “directly” means in a straight line; without anything in between.
Which word means “in a straight line; without anything in between”?
C — directly. “directly” means in a straight line; without anything in between.
directly — in a straight line; without anything in between. In Chinese: 直接地.
directly is pronounced /dəˈrɛktli/.
The telescope's lens focused light directly onto the sensor, producing a crisp image of the distant nebula without any intermediary reflection. (望远镜的镜头将光线直接聚焦到传感器上，无需任何中间反射便产生了遥远星云的清晰图像。)
straight, immediately, straightforwardly — all close in meaning to directly (in a straight line; without anything in between).
indirectly, circuitously — each the opposite of directly (in a straight line; without anything in between).
Yes. directly is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.