Leaves are always positively phototropic.

叶子总是正向光性的。

youdao

Repelled by light; exhibiting a negative phototactic or phototropic response.

避光的，怕光的被光排斥的；表现为阴性。

youdao

The microorganisms employed include mainly chemical conversion bacteria , phototropic bacteria and alga .

所利用的生物体主要包括：化学转化细菌、向光性细菌和藻类。

youdao

Called the Hummer O2 (like the H2, only less toxic), this concept -- which just won the L.A. Auto Show Design Challenge -- incorporates a number of innovative, futuristic features into its oddly-shaped chassis, not the least of which is a "phototropic" body shell that contains algae-filled panels.

ENGADGET: Hummer O2 concept brings shame to the nature-terrorizing brand